全能比赛中,一项比赛结束到下一项比赛开始至少有多少休息时间()
A.30分钟
B.45分钟
C.60分钟
D.90分钟
参考答案:A
根据汉语提示写出相应的单词。
1. He is a _________(成员) of the Communist Party.
2. They _________(回到) home after school yesterday.
3. The Young Pioneers clean the rooms for the old grandma ________(自己).
4. The snow will ________(融化) when spring comes.
5. He went to school _______(没有) breakfast.
满足哪些条件的金属才能进行气割?