下列加点字全音全对的一项是() A.蹩(biē)进卮(zhì)酒压轴(zhòu)

题型:选择题

问题:

下列加点字全音全对的一项是(     )

A.蹩(biē)进卮(zhì)酒压轴(zhòu)戏不省所怙(hù)

B.瘐(yǔ)毙罪愆(yǎn)汗涔涔(cén)窸窸窣窣(suō)

C.打烊(yàng)睇眄(miǎn)罥 (juàn)烟眉插科打诨(hùn)

D.央浼(miǎn)缱(qiǎn)绻觇(chān)视叨(dāo)陪鲤对

考点:字音
题型:选择题

紫花豌豆与白花豌豆杂交,F1全是紫花,F1自交产生的F2中出现紫花和白花,其数量比为705:224,出现这一现象的实质是[ ]

A.F1自交后代出现性状分离

B.紫花是显性性状,白花是隐性性状

C.等位基因随同源染色体的分离而分离

D.控制紫花的基因对控制白花的基因有显性作用

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回答问题。阅读短文,然后根据短文内容简要回答下列问题。(计10分

Some things can carry messages, for example, a sign at the bus stop helps you to know which bus to take. Signs on the door tell you where to go in or out. Have you ever noticed that there are a lot of signs around you and that you receive messages from them all the time?

People can communicate on many other ways. An artist can use his drawing to tell about beautiful mountains, about the blue sea and many other things. Books are written to tell you about all the wonderful things in the world and also about people and their ideas.

Books, magazines, TVs, radios and films all help us to communicate with others. They all help us to know what is going on in the world and what other people are thinking about.

1. What can help you if you want to know which bus to take?

_______________________________________________

2. What do the signs on the door do?

_______________________________________________

3. People can communicate in many other ways, can’t they?

_______________________________________________

4. What can help us to communicate with others?

_______________________________________________

5. What do they help us to do?

_______________________________________________

题型:选择题

蒸馏时蒸馏瓶中的蒸馏液最多不能超过此瓶容积的(),最少不能小于()。

题型:选择题

近10年来,移居清河界森林周边地区生活的居民越来越多。环保组织的调查统计表明,清河界森林中的百灵鸟的数量近十年来呈明显下降的趋势。但是恐怕不能把这归咎于森林周边地区居民的增多,因为森林的面积并没有因为周边居民人口的增多而减少。

以下哪项如果为真,最能削弱题干的论证?()

A.清河界森林的面积虽没减少,但主要由于几个大木材集团公司的滥砍滥伐,森林中树木的数量锐减

B.清河界森林周边的居民大都从事农业,只有少数经营商业

C.警方每年都接到报案,来自全国各地的不法分子无视禁令,深入清河界森林捕猎

D.清河界森林周边居民丢弃的生活垃圾吸引了越来越多的乌鹊,这是—种专门觅食百灵鸟卵的鸟类

题型:选择题

氧气站的危险点是()

A.易燃、易爆炸

B.破裂

C.失效

D.漏氧气

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