收集下列气体时,不能用排空气法而只能用排水法的是[ ]
A.NH3
B. H2
C.NO
D.NO2
答案:C
下列说法不正确的一项是( )(3分)
A.雨果给巴特勒上尉的信中使用反语艺术来谴责侵略者的罪行。
B.鲁迅对她小时候的保姆阿长直呼其名,可见对她并无怀念之情。
C.战地通讯《蜡烛》以此为题,是因为点在坟头的蜡烛有着特殊含义。
D.杨绛通过《老王》传达给我们的是平等的观念和人道主义精神。
用括号内所给词的适当形式填空。
1. Though she is blind, she still tries her best to help other (disable) people.
2. We can't set up the hospital without many kind people's _ (donate).
3. My dog's name is Lucky because I feel very lucky (have) him.
4. The cake was _ _ (special) made for your 20th birthday.
5. —Thank you for sending so beautiful flowers to me.
—It's a _ (please).