营养盐样品需经过()微孔滤膜过滤,滤膜使用前需经()盐酸浸泡。
参考答案:0.45μm;1%
按要求改写句子。(每空0.5分,共5分)
小题1:Sweet snacks are bad for our health.(改为同义句)
It’s bad for us________ _________sweet snacks.
小题2:I’d like to buy a pair of trousers.(对划线部分提问)
__________ ________ ________ of trousers would you like to buy?
小题3:They watch TVfor two hours once a week. (对划线部分提问)
___________ ___________ do they watch TV for two hours?
小题4:Does Kitty wear glasses?(改为陈述句)
Kitty _________ glasses.
小题5:There isn’t a tomato in the basket. (改为复数句)
There __________ any __________in the basket.
关于下列讨债技巧,错误的是()。
A.兵马慎动,策略先行
B.少说,多写,文武兼施
C.出其不意,以快制胜
D.法理情意,同步相逼