[单项选择]The view that the yield of rice remains steady is by no means______, owing to the fact that yearly tempests overflowing Asia influence it in______manner.


A. uncertain … a capricious
B. uncontested … a predictable
C. unrealistic … a catastrophic
D. convincing … a redundant
E. (E) infallible … an erratic

[单项选择]PIGHEADED : YIELD ::
A. lionhearted : retreat
B. lily-livered : flee
C. dogged : pursue
D. featherbrained : giggle
E. eagle-eyed : discern

[单项选择]为防止损伤后软组织粘连，常用RICE法处理，以下不属于RICE法的是（）
A. 休息
B. 冰敷法
C. 松动法
D. 压缩
E. 抬高

[单项选择]Warm-blooded animals maintain a steady temperature by ______.
A. storing heat in their body cells
B. regulating the amount of heat produced
C. regulating the amount of heat given off
D. constantly replacing lost surface heart

[单项选择]If expected yield volatility increases, the price of a(n)（）
A. put-able bond will increase.
B. callable bond will increase.
C. embedded put option will decrease.

[单项选择]Credit risk is measured in several ways. The yield differential above the return on a benchmark security measures the:（）
A. default risk.
B. downgrade risk.
C. credit spread risk.

[单项选择]According to the passage, plagiarism remains a growing problem largely because________.


A. the plagiarism-detection tools are not powerful enough
B. the violators are smarter than the service providers
C. the violators believe they can run away with their behavior
D. the educators and businesses are too tolerant

[单项选择]

Fossils are the remains and traces of ancient plant and animal lives that are more than 10,000 years old. They range in size from microscopic structures to dinosaur skeletons and complete bodies of enormous animals. Skeletons of extinct species of human are also considered fossils.
An environment favorable to the growth and later preservation of organisms is required for the occurrence of fossils. Two conditions are almost always present: The possession of hard parts, either internal or external, such as bones, teeth, scales, shells, and wood; these parts remain after the rest of the organism has decayed. Organisms that lack hard parts, such as worms and jelly fish have left a meager geologic record. Quick burial of the dead organism, so that protection is afforded against weathering, bacterial action, and scavengers.
Nature provides many situations in which the remains of animals and plants are protected against destruction. Of these, marine sediment is by far th
A. quick burial.
B. cold storage.
C. quick temperature change.
D. lack of water

[单项选择]They had a far better yield than any other farm miles away around this year.
A. goods
B. soil
C. climate
D. harvest

[单项选择]

Text 1
Fossils are the remains and traces ( such as footprints or other marks) of ancient plant and animal life that are more than 10,000 years old. They range in size from microscopic structures to dinosaur skeletons and complete bodies of enormous animals. Skeletons of extinct species of humans are also considered fossils.
An environment favorable to the growth and later preservation of organisms is required for the occurrence of fossils. Two conditions are almost always present: (1) The possession of hard parts, either internal or external, such as bones, teeth, skulls, shells, and wood; these parts remain after the rest of the organism has decayed. Organisms that lack hard parts, such as worms and jellyfish, have left few geologic records. (2) Quick burial of the dead organism, so that protection is afforded against weathering, bacterial action, etc.
Nature provides many situations in which the remains of animals and plants are protected against
A. in a deep lake.
B. covered by sediment.
C. protected by oil.
D. buried slowly.

[单项选择]If the voltage remains constant, the more the resistance, the less the current.


A. 如果电压稳定，电阻变大，电流变小。
B. 如果电压不变，电阻和电流成反比。
C. 电阻和电流的大小之比取决于电压的大小。
D. 电压越高，电阻就越大，电流就越小。

[单项选择]The word "yield" in paragraph 4 is closest in meaning to ______.
A. give up.
B. produce.
C. release.
D. unpack.