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【单选题】
_____ the terms of payment as stipulated in the contract ，please establish an irrevocable letter of credit in our favor.A.
In fact
B.
As a matter of fact
C.
In contrast with
D.
In accordance with
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举一反三
【单选题】A) To carry out a scientific survey. B) To establish a new research station. C) To rescue two sick American workers. D) To deliver urgent medical supplies.
A.
To carry out a scientific survey.
B.
To establish a new research station.
C.
To rescue two sick American workers.
D.
To deliver urgent medical supplies.
【简答题】Questions 3 and 4 are based on the news report you have just heard . 3. ________ A ) To carry out a scientific survey . B ) To establish a new research station . C ) To rescue two sick American worker...
【单选题】The author mentioned many inventors in the first paragraph to______.
A.
remind American of their historical heritage
B.
highlight American' s loss of supremacy in scientific innovation
C.
describe the heyday of America in science and innnovation
D.
express his regret for the decline of American national power
【简答题】在幂法的迭代公式 中,当向量 和 的各个分量 时, 是 特征值的近似值, 是相应的特征向量。
【单选题】A) To carry out a scientific survey. B) To establish a new research station. C) To rescue two sick American workers. D) To deliver urgent medical supplies.
A.
To carry out a scientific survey.
B.
To establish a new research station.
C.
To rescue two sick American workers.
D.
To deliver urgent medical supplies.
【简答题】Read the article below from the magazine Scientific American. Underline the key facts in Para. 2-4. The first paragraph is done for you as an example. Centuries of silence cannot keep ancient mummies ...
【单选题】The main purpose of this passage is to_____．
A.
restore American students’interest in science
B.
keep American alert to the rise of other nations
C.
warn American of the decline of their scientific edge
D.
urge government to invest more in education and research
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