The fact has worried many scientists ______ the earth is becoming warmer and warmer these years. A. what B. which C. that D. though
正确答案：C
举一反三
- The fact has worried many scientists _______ the earth is becoming warmer and warmer these years.
- Approximately, how much warmer has the Earth become over the past 200 years?
- Scientists tell us that the earth is getting ( )<br/>because of the greenhouse effect. A: warmer B: warmly C: warmth D: colder
- 中国大学MOOC: 2. What causes the Earth to be warmer according to the video clip?
- Which of the following factors contributed to a closer, warmer relationship between the US and Russia in recent years?
内容
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The weather is getting . A: warmer and warmer B: warm and warmer
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2. What causes the Earth to be warmer according to the video clip? A: The atmosphere. B: The greenhouse gases. C: The sunbeams. D: The radiation from the outer space.
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Scientists think that there _____ life on Earth for millions of years. A: has had B: have had C: has been D: have been
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How many years has Richard been working in this company? ________ years.
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Mary has long had the desire ______ a famous writer even though the study of writing would require years of sacrifice on her part. A: for becoming B: to become C: of becoming D: becoming