问题
选择题
-I didn't do well in the last English contest. How about you.
-_________. [ ]
A. I'll do better next time
B. Even worse
C. A lot better
D. I like English, though
答案
答案：B
搜题请搜索小程序“爱下问搜题”
-I didn't do well in the last English contest. How about you.
-_________. [ ]
A. I'll do better next time
B. Even worse
C. A lot better
D. I like English, though
答案：B
太阳里的热核反应方程为
，下列说法正确的是（ ）
A． 和 是两种不同元素的原子核 | B．和是氢的两种同位素的原子核 |
| C．这个反应既是核反应,也是化学反应 | |
| D．这个反应过程中反应前核的总质量小于反应后核的总质量 |