用氯化钠固体配制50 g质量分数为5%氯化钠溶液,下列仪器中需要用到的是
A.②④⑥⑦
B.①④⑤⑥
C.①③⑤⑦
D.①③④⑥
答案:B
用所给单词的适当形式填空
1. The dolphin is too old to jump as _ _(high) as he used to.
2. In general, some animals are not so ( clever) as the monkeys.
3. He was not used to ( eat) the Western-style food when he got to England for the first time.
4. I used to______(swim) in the river when l was very young
5. It's good for you to stop (smoke).
6. He was the only person in the room who had been drinking_ ___(heavy).
7. My mother doesn't make me____(play) with the lazy boys.
8. I saw a man in black____ (walk) into the Bank of China.
9. We used to hate (remember) whose longer English words.
10. I'm not still used to____(write) the diaries.
下列不是导致全球结核病疫情严重恶化原因的是()
A.卡介苗针对成年人的预防效果不确定
B.HIV和AIDS的蔓延和流行
C.发展中国家人口的迅速增长和加速流动
D.耐多药结核病的产生
E.控制结核病在全球公共卫生政策中被忽视