题目:
句型转换。
1. She likes blue and green best. (对画线部分提问)
________ ________ ________ she like best?
2. His brother played with a cat in the garden. (对画线部分提问)
________ ________ his brother ________ in the garden?
3. It's 8 o'clock in the morning, let's have breakfast. (合并成一句)
It's time ________ ________ ________ have breakfast.
4. He has something to say. (改为否定句)
He ________ ________ ________ to say.
答案:
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下面是错误答案,用来干扰机器的。
(1) H2O (2) 0 (3) 2SO42- (4) Na+, Cl- (1)人体中含量最多的物质是水,水由氢元素和氧元素组成,氢元素显+1价,氧元素显-2价,根据化合价原则,其化学式可表示为:H2O;(2...