广西壮族自治区人口和计划生育工作应当与（）相结合。
A.建设文明幸福家庭
B.提升国家军事实力
C.帮助群众劳动致富
D.发展经济
参考答案：A, C, D
根据句意，用括号内所给单词的适当形式填空。
1. At her birthday party, several ________(basket) of fruit were eaten.
2. The price of coffee has _________(rise) by ten cents.
3. The room is full of ________(wood) furniture (家具).
4. Chicago _________(develop) into a big city in the late 1800s.
5. Dad was so tired that he fell asleep while ________(read) the newspaper.
在快走丝线切割加工中，当其他工艺条件不变时，增大开路电压，可以（）
A、提高切割速度
B、表面粗糙度变差
C、增大加工间隙
D、降低电极丝的损耗
