题目内容
（请给出正确答案）
A、Reduction of the lengths of sounds.
B、Obscuration of vowels towards the schwa /ə/ .
C、Elision of vowels and consonants.
D、Rising the pitch of the vowel.
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更多“The weak forms of English function words show the following features.”相关的问题
B．Obscuration of vowels towards and schwA
C．Elision of vowels and consonants.
D．Rising the pitch of the vowel.
A、Aspirin, weak acid (pKa = 3.0)
B、Ethacrynic acid, weak acid (pKa = 3.5)
C、Sulfamethoxazole, weak acid(pKa=5.6)
D、Secobarbital, weak acid (pKa = 7.8)
E、Theophylline, weak base (pKa = 8.8)
Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
Only two major American film forms—the slapstick comedy and the western—withstood the effects of foreign influences throughout the 1920's, when the entire film industry, was dominated by the European moviemakers. These forms were already immensely popular all over the world (there was no need to make them more "artistic" by following the latest European fashions), and they were at once too successful and too lowly to warrant such improvements-they were considered "just entertainment." They bore no weighty messages, inspired no cults and no schools of esthetics. But they delighted audiences, both here and abroad, because they were so purely and simply America. Unconsciously, they represented all that was best in America without the slightest trace of intention, of sermonizing. The ingenuity and eternal optimism of the cornices and the cowboys' spirit of adventure as they rode the plains in search of the next frontier were enough to carry the message of the American dream to tired Europeans, to cramped city dwellers, to small boys, to people everywhere.
What did these films promise to European audiences disillusioned and exhausted by World War I？ The humble always triumphed over their powerful adversaries, the weak outwitted the strong and always implied was a future of riches, freedom, and happiness for all. The world of the westerns was a simple place for men with the pioneer virtues of honesty, courage, a taste for adventure, and a quick trigger ginger; the world of the comics was a crazy place, but with a little faith and a little luck, it could be a wonderful place.
These forms were not "improved" because they were______.
A．too successful to need improvement
B．too lowly to warrant improvement
C．too insane to improve artistically
D．both A and B
听力原文：M: So, what is your biology project about？
W: It is about microorganisms that…en, microorganisms that live by Chemosynthesis.
M: Ehm…what’s Chemosynthesis？
W: Well, it’s pretty complicated. You know how most life on Earth depends either directly or indirectly on sunlight？
M: You mean like plants get energy directly from sunlight, and animals eat plants, so they depend indirectly on sunlight？
W: Right. But down on the ocean floor, there is no sunlight. In some places though, there are hydrothermal vents, which are small cracks on the sea floor. And these vents release heat and minerals from the inside of the Earth into the seawater. And all along the vents there are these unusual microorganisms. They are called archaean. And these archaean use chemical reactions to get their energy from the minerals, the minerals that are released by the vents. So their energy comes from chemical reactions, not sunlight.
M: So chemosynthesis is getting their energy from chemicals？
W: That is right.
M: That makes archaean very different from other forms of life.
W: And their genetic makeup is very different too. They are one sort of organisms just like bacteria are, but genetically they are as different from bacteria as we humans are.
M: Waa, that’s a really interesting project.
(35)
A．How hydrothermal vents are formed.
B．How living things get energy from sunlight
C．The harmful effects of certain chemicals in the ocean.
D．Microorganisms that get energy from chemical reactions.
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