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Read the following passage and choose the correct answer A, B, C, D for each question.
Broad-tailed hummingbirds often nest in quaking aspens, slender deciduous trees with smooth, gray- green bark: found in the Colorado Rockies of the western United States. After flying some 2,000 kilometers north from where they have wintered in Mexico, hummingbirds need six weeks to build a nest, incubate their eggs, and raise the chicks. A second nest is feasible only if the first fails early in the season. Quality, not quantity is what counts in hummingbird reproduction.
A nest on the lowest intact branch of an aspen will give a hummingbird a good view a clear flight path, and protection for her young. Male hummingbirds claim feeding territories in open meadows where, from late May through June, they mate with females coming to feed but take no part in nesting. Thus when the hen is away to feed, the nest is unguarded. While the smooth bark of the aspen trunk generally offers a poor grip to the claws of a hungry squirrel or weasel, aerial attacks, from a hawk, owl, or gray jay, are more likely.
The choice of where to build the nest is based not only on the branch itself but also on what hangs over it. A crooked deformity in the nest branch, a second, unusually close branch overhead, or proximity to part of a trunk bowed by a past ice storm are features that provide shelter and make for an attractive nest site. Scarcely larger than a halved golf ball, the nest is painstakingly constructed of spiderwebs and plant down, decorated and camouflaged outside with paper-like bits of aspen bark held together with more strands of spider silk. By early June it will hold two pea-sized eggs, which each weigh one-seventh of the mother's weight, and in sixteen to nineteen days, two chicks.
66. What aspect of broad-tailed hummingbird behavior does the passage mainly discuss?
A. Migration routes B. Mating habits
C. Caring for the young D. Selection of nest sites
67. According to the passage, in what circumstances do hummingbirds build a second nest?
A. If the winter is unusually warm B. If the chicks in the first nest hatch early
C. If there is an unusually large supply of food D. If the eggs are destroyed early in the season
68. The word "clear" in line 8 is CLOSEST in meaning to .
A. bright B. exact C. unobstructed D. transparent
69. The word "they" in line 9 refers to .
A. females B. territories C. meadows D. male hummingbirds
70. According to the passage, which of the following is true of the male broad-tailed hummingbird?
A. It finds food for the female and the chicks.
B. It protects the nest while the female searches for food.
C. It is not involved in caring for the chicks.
D. It shares nesting duties equally with the female.
71. It can be inferred from the passage that the broad-tailed hummingbirds' eggs and chicks are most vulnerable to attacks by .
A. insects B. humans C. birds D. squirrels
72. Which of the following would be a good location for a broad-tailed hummingbird to build its nest?
A. A branch near the top of a tree B. The longest branch of a tree
C. A thick branch D. A protected branch
73. Which of the following was NOT mentioned in the passage as a nest-building material of the broad-tailed hummingbird?
A. Paper B. Plant down C. Spiderwebs D. Tree bark
74. The author compares the size of the broad-tailed hummingbird's nest to .
A. a pea B. a golf ball C. a spiderweb D. an egg
75. According to the passage, how long does it take for broad-tailed hummingbird eggs to hatch?
A. Less than a week B. Two to three weeks C. One month D. More than six weeks
Broad-tailed hummingbirds often nest in quaking aspens, slender deciduous trees with smooth, gray- green bark: found in the Colorado Rockies of the western United States. After flying some 2,000 kilometers north from where they have wintered in Mexico, hummingbirds need six weeks to build a nest, incubate their eggs, and raise the chicks. A second nest is feasible only if the first fails early in the season. Quality, not quantity is what counts in hummingbird reproduction.
A nest on the lowest intact branch of an aspen will give a hummingbird a good view a clear flight path, and protection for her young. Male hummingbirds claim feeding territories in open meadows where, from late May through June, they mate with females coming to feed but take no part in nesting. Thus when the hen is away to feed, the nest is unguarded. While the smooth bark of the aspen trunk generally offers a poor grip to the claws of a hungry squirrel or weasel, aerial attacks, from a hawk, owl, or gray jay, are more likely.
The choice of where to build the nest is based not only on the branch itself but also on what hangs over it. A crooked deformity in the nest branch, a second, unusually close branch overhead, or proximity to part of a trunk bowed by a past ice storm are features that provide shelter and make for an attractive nest site. Scarcely larger than a halved golf ball, the nest is painstakingly constructed of spiderwebs and plant down, decorated and camouflaged outside with paper-like bits of aspen bark held together with more strands of spider silk. By early June it will hold two pea-sized eggs, which each weigh one-seventh of the mother's weight, and in sixteen to nineteen days, two chicks.
66. What aspect of broad-tailed hummingbird behavior does the passage mainly discuss?
A. Migration routes B. Mating habits
C. Caring for the young D. Selection of nest sites
67. According to the passage, in what circumstances do hummingbirds build a second nest?
A. If the winter is unusually warm B. If the chicks in the first nest hatch early
C. If there is an unusually large supply of food D. If the eggs are destroyed early in the season
68. The word "clear" in line 8 is CLOSEST in meaning to .
A. bright B. exact C. unobstructed D. transparent
69. The word "they" in line 9 refers to .
A. females B. territories C. meadows D. male hummingbirds
70. According to the passage, which of the following is true of the male broad-tailed hummingbird?
A. It finds food for the female and the chicks.
B. It protects the nest while the female searches for food.
C. It is not involved in caring for the chicks.
D. It shares nesting duties equally with the female.
71. It can be inferred from the passage that the broad-tailed hummingbirds' eggs and chicks are most vulnerable to attacks by .
A. insects B. humans C. birds D. squirrels
72. Which of the following would be a good location for a broad-tailed hummingbird to build its nest?
A. A branch near the top of a tree B. The longest branch of a tree
C. A thick branch D. A protected branch
73. Which of the following was NOT mentioned in the passage as a nest-building material of the broad-tailed hummingbird?
A. Paper B. Plant down C. Spiderwebs D. Tree bark
74. The author compares the size of the broad-tailed hummingbird's nest to .
A. a pea B. a golf ball C. a spiderweb D. an egg
75. According to the passage, how long does it take for broad-tailed hummingbird eggs to hatch?
A. Less than a week B. Two to three weeks C. One month D. More than six weeks
