下列属于正确的核聚变方程的是 A: 1H + 2H → 3He B: 2H + 3H → 4He + n C: 2H + 3H → 3He D: 1H + 2H → 4He + n

以下哪个核聚变方程是安全的，不会产生辐射粒子泄露的危险 A: 2H + 3H → 4He + n B: 2H + 2H → 3He + n C: 2H + 2H → 3H + 1H D: 2H + 3He → 4He + 1H

Questions 3: Susan and (he, him) are siblings. A: he B: him

氘核俘获动能为1 MeV的质子所形成的3He核的激发能为（）。

α衰变发射出的粒子为（） A: 2H核 B: 3H核 C: 3He核 D: 4He核

He lived in London for 3 months , during ____ time he learned some English.

Question 8: When was Kher separated from his parents A: When he was 13 B: When he was 16 C: When he was 3 D: When he was 7

News Report 2Questions 3 and 4 are based on the news report you have just heard.Question 3 A: He works at a national park. B: He is a queen bee specialist. C: He removed the beyond from the boot. D: He drove the bees away from his car.

1 Socrates was _______________________. He is a patron saint of philosophy. 2 He was born in ________ in _______. 3 As a young man, he had been a brave soldier ____________________________. 4 In middle age, he ___________________________________. 5 In 399 BC, _______________________________________________.

He called at 2)____________, but her parents did not 3)________________.