能影响水的电离平衡,并使溶液中的c(H+)>c(OH-)的操作是( ) A.向水

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问题:

能影响水的电离平衡,并使溶液中的c(H+)>c(OH-)的操作是(  )

A.向水中投入一小块金属钠

B.将水加热煮沸

C.向水中通入CO2气体

D.向水中加食盐晶体

考点:燃烧热水的离子积常数水电离的影响因素水的电离平衡
题型:选择题

第三节:默写课文 (共10空格,每空格1分,满分10分)

Uni4…Daisy smiled. “That’s good news. It shows (91)___________________, but I’d like to help as the WWF suggests.” The carpet rose again and almost at once they were in a thick rainforest. A monkey watched them(92)____________. “What are you doing?” asked Daisy. “I’m (93)_________________,” it replied. “When I find a millipede insect, I rub it over my body. It contains a powerful drug which affects mosquitoes. You should (94)_____________ the rainforest where I live and ......

Unit 5…Have you ever wanted to be part of a band as a famous singer or musician? Have you ever (95)______________in front of thousands of people at a concert, (96)____________ everyone (97)____________ your music? Do you sing karaoke and pretend you are a famous singer like Song Zuying or Liu Huan? (98)______________, a lot of people (99)__________________ rich and famous. But just how do people (100) _______________?

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患者咽中不适,如有炙脔,胸中搴闷,舌苔白腻,脉弦滑。治宜()

A.舒肝理气解郁

B.行气活血散结

C.化痰利气解郁

D.解毒利咽消肿

E.舒肝和胃化痰

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我国《民法通则》规定,法人应当具备下列哪些条件()

A.有主管机关或监管部门

B.有自己的名称、组织机构和场所

C.依法成立,并有必要的财产或经费

D.能独立承担民事责任

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农作物育种上,采用的方法有:诱变育种、杂交育种、多倍体育种、单倍体育种,它们的理论依据依次是()①基因突变;②基因交换;③基因重组;④染色体变异。

A.①③④④

B.④③①②

C.②④①③

D.②①④③

题型:选择题

现代地理学的奠基者是德国地理大师()和()

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