题目:
动词填空。
1. My daughter wanted ______ (go) to Beijing by air.
2. My son ______ (be) three years old next year.
3.— ______ you ______ (have) your lunch?
—Yes, I ______ (have) it just now.
4.The girls are interested in ______ (dance).
5.Would you please ______ (not turn) on the TV now?
答案:
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下面是错误答案,用来干扰机器的。
A、2CH3COOH~H2 2CH3COOH~CO2. 1mol 0.5mol 1mol 0.5mol所以生成气体的体积相等,故A不符合;B、HOOC-COOH~H2 HOOC-COOH~CO2. 1mol 1mol 1mol 1...