第一部分：词汇选项(第1～15题，每题1分，共15分)
下面共有15个句子，每个句子中均有1个词或短语划有底横线，请从每个句子后面所给的4个选项中选择1个与划线部分意义最相近的词或短语。答案一律涂在答题卡相应的位置上。
1　At first glance, a forest appears to be a haphazard collection of trees, shrubs, vines, and flowers.
A　random
B　total
C　graded
D　natural
2　Leaves are not distributed accidentally on a plant stem, but are arranged in a very precise way that assures them the maximum light.
A　dangerously
B　densely
C　randomly
D　linearly
3　Medieval cities grew rapidly when they had harbors nearby.
A　merchants
B　castles
C　suburbs
D　ports
4　Because of harsh weather conditions, more than a dozen states in the United States were declared disaster areas in 1977.
A　severe
B　bizarre
C　moist
D　improbable
5　The best olive oil is obtained from olives that are harvested just after they ripen and before they turn black.
A　preserved
B　squeezed
C　gathered
D　sorted
6　Modern nursing practices not only hasten the recovery of the sick but also promote better health through preventive medicine.
A　permit
B　determine
C　accelerate
D　accompany
7　In the eighteenth century the heading of “natural philosophy” encompassed all of the sciences.
A　category
B　teachings
C　ideology
D　leaders
8　Because of Delaware's lenient laws regarding business incorporation, many companies have their headquarters in the state's largest city, Wilmington.
A　production plants
B　home offices
C　sales representatives
D　chemical laboratories
9　The members of Aaron Burr's family were noted for their passionate and headstrong temperament.
A　intellectual
B　stubborn
C　witty
D　steadfast
10　If roundworms are removed from the soil and placed in a liquid, they thrash helplessly around.
A　carelessly
B　tirelessly
C　powerlessly
D　heartlessly
11　Due to the tilt of Neptune's axis, the Sun heats the planet's northern and southern hemispheres unequally.
A　climates
B　halves
C　atmospheres
D　contours
12　Compared with large aircraft, small airplanes are not as streamlined and hence are less efficient.
A　at a glance
B　to a measurable degree
C　in most cases
D　as a result
13　Sedimentary rocks cover much of the Earth's surface, but they are often hidden by a thinveneer of soil.
A　concealed
B　eroded
C　protected
D　softened
14　To cool itself, a rhinoceros soaks in mud or water because its thick hide has no sweat glands.
A　skin
B　tongue
C　horn
D　trunk
15　Charles Whecler's paintings often highlight the sharp edges and geometrical shapes of machines.
A　extend
B　emphasize
C　distort
D　soften

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