题目内容

Fill in the blanks with the appropriate forms of the given expressions.be obssessed with, give rise to1. Analysts ______ short-term performance at the expense of long-term profitability.2. The President's absence ______ speculation about his health.

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Fill in the blanks with the appropriate forms of the given words:mature, stimulant, gratify1. When did his writing come to ______ ?2. Housework doesn't provide much intellectual ______ .3. It's ______ to know that you've passed the exam.

Choose a suitable expression from the pair to finish the sentences.1. The news came just in time to boost the ______ . (moral, morale)2. They argued for the ______ treatment of the mentally ill. (human, humane)

Cloze:These forecasts illustrate the ______ power of the deceptively ______ temperature changes that climatologists ______ . The IPCC warns that the world could be, on ______ , 1.6 to 6.3 degrees ______ by 2060.

钙的作用?

A. 构成骨骼和牙齿的元素
B. 参与调节多种激素和神经递质的释放
C. 具有促进性发育、维持性功能的作用
D. 参与甲状腺素的合成

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