题目内容

【题目】I wonder _________.

Because she is always ready to help others.

A.why all the classmates like Alice

B.why do all the classmates like Alice

C.whether all the classmates like Alice

D.whether do all the classmates like Alice

【答案】A

【解析】

句意:——我想知道为什么所有的同学都喜欢Alice。——因为她总是乐于助人。

考查宾语从句。根据I wonder ___.可知这里考查宾语从句,宾语从句应用陈述句语序,故排除BD选项;根据答语可知此处是询问Alice被所有同学喜欢的原因,故答案选A

练习册系列答案
相关题目

【题目】 Fresh green grass, hundreds of colorful wild flowers, water running into little pools, birds making their homes in boxes, the 9,500-square-meter Augustenborg Botanical Garden may look just like any other well-organized park, but there’s a difference. It lies on the roofs (屋顶) of industrial and office buildings in the city of Malmo in Sweden.

Green roofs are not a new invention. And now they are getting popular again. The common roofs of a modern city have endless black surfaces with no life or water. Perhaps that’s why a garden on a roof becomes such a perfect choice for more and more people.

Green roofs are not just pretty. They also help to moderate the city temperature. The high temperatures on common roofs in the summer can make top floor flats uncomfortably hot. What is more, they play a part in making the cities hotter than the countryside around them, causing the “urban heat-island effect”. On a green roof, however, with its plants and water, temperatures change only a little, as they do in a park. Rooftops covered with plants help keep buildings cool. Green roofs take in rain water and protect the city drainage (排水) system. They can reduce water runoff into streets and storm water systems. This can greatly cut the costs of heating and cooling in the building below.

Also, _______. Small animals and birds can make their homes on it. Thanks to this, the city may become part of nature, rather than something completely separate from it. Though they won’t directly replace ground environments, they’re perfect for attracting birds and other wildlife to create a eco-friendly habitat (栖息地).

A green roof helps to improve the overall air quality, too. According to a study, green roofs help reduce (减少) up to:

37% of sulfur dioxide

21% of nitrous acid

0.2kg of dust particles / square meter each year

While the cost of building such a roof can still be higher, it can be cheaper in the long term as a result of energy savings. And wouldn’t it be wonderful to be able to walk out into a garden high above the city’s noise and traffic, whether you’re at school or in an office or just at home in a ten-floor block?

1With the example of Augustenborg Botanical Garden, the writer wants to explain ________.

A.how wildlife is protectedB.what a green roof is like

C.how to organize a good parkD.what to do with a spare roof

2The word “moderate” in Paragraph 3 probably means “________”.

A.raiseB.checkC.recordD.control

3Which of the following is the best sentence to fill in the blank in Paragraph 4?

A.a green roof is aliveB.a green roof protects animals

C.a green roof is perfectD.a green roof helps the environment

【题目】 Do you often listen to music at loud volumes(音量)? You should know that this habit is bad for your hearing, according to the World Health OrganizationWHO.

Over 1 billion young people are at risk of hearing loss due to listening to loud noise for long periods of time, WHO said. Listening to music or watching a TV show at loud volumes can harm your hearing.

The United nations has standards for safe listening. It is not safe to listen to sounds that are louder than 85 decibelsdB分贝)for eight hours or 100 dB for 15 minutes. The sound of a busy road is about 85 dB and the sound of a rock concert can be about 100 dB.

Loud noise is harmful to the inner ear(内耳). Most of us are born with about 16,000 hair cells(听毛细胞)in our inner ears. These cells detect sounds. However, listening to loud noise for a long time can make these cells work too hard and cause some of them to die. This is what causes hearing loss.

Some people might think that their music isn’t that loud. But this depends on where you are. For example, if you are in a noisy place like the subway, you might turn up your music too loud without realizing it. Later, when you listen to it at the same volume in a quiet place, you might feel uncomfortable.

WHO said the “safe level” for most sound is below 80 dB for up to 40 hours a week. A level of 80 dB is nearly equal to the noise of a subway.

1Which of the following is bad for our hearing?

A.Reading books aloud in the morning.B.Talking with friends now and then.

C.Listening to music loudly more often.D.Using smart phones for a long time.

2Listening to sounds louder than 85 decibels for _________ hours is not safe for our listening.

A.5B.6C.7D.8

3From the fourth paragraph, we can know that ________.

A.inner ear can stop from the louder noise

B.hair cells in inner ear are very important for people

C.people can hear without hair cells

D.hair cells are not something people are born with

4The underlined word “detect” in the fourth paragraph probably means “________”.

A.discoverB.doubtC.cancelD.remain

5The best title(题目)for the passage can be _________.

A.The inner earB.UN safety listening standards

C.Pay attention to protecting our hearingD.The “safe level” for sound

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网