题目内容

The writing format of the invitation letter and the invitation card is the same.

A. 对
B. 错

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溶酶体膜的特殊性质

Explain as clearly as you can the meaning of each of the words given below and complete the sentences with the word that seems most suitable:exhibition demonstrationspectaclea. We saw a _______________ of how to revive a person who has been almost drowned.I will take you to a most interesting _____________ of nineteenth century dresses.

buoyancy, elasticity, flexibilityb. I was amazed at the ___________ of his little steel trout rod.We may capsize but will not sink because the tanks under the seats provide plenty of _______________.

duplicate, counterfeit, impersonatec. He intended to steal a uniform and ____________ the local policeman.There is so much traffic that they will have to _____________ the railway line.

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