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nbang807
1 năm trước
Một ion X2+ có tổng số hạt proton, nơtron, electron là 74, trong đó số hạt mang điện nhiều hơn số hạt không mang điện là 18. Vị trí của X trong bảng tuần hoàn là:
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Mình cần gấp ạ ^^ Choose the sentence that is closest in meaning to the one given. 1 Too many sweets are bad for you. A. It is bad for you to eat too many sweets. B. You ought to eat enough sweets. C. I don’t know how many sweets are good for you. D. You eat so many sweets that it is enough. 2 You should telephone her. A. You ought to talk to her about telephone. B. Her telephone ought to be spoken. C. She should be talked more for telephone. D. You should speak to her on the telephone. 3 My house is near to Mr. Smith’s. A. Mr. Smith and I live close to each other. B. My house and Mr. Smith’s is getting nearer. C. I don’t want to live far from Mr. Smith. D. Mr. Smith’s house is near here, and so is mine. 4 I’m rather fat now because I eat sweets so often. A. If I don’t eat sweets so often, I am not fat at all now. B. I will not be fat if I didn’t eat sweets so often. C. If I didn’t eat sweets so often, I wouldn’t be fat now. D. I wouldn’t be fat now if I don’t eat sweets so often.

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