【題目】Bill is in the classroom, doing _______ homework.

A. his B. he C. him D. himself

【答案】A

【解析】句意：Bill現(xiàn)在在教室里，做他的家庭作業(yè)。his他的，形容詞性物主代詞；he他，是人稱代詞主格形式；him他，是賓格形式；himself他自己，是反身代詞。do one’s homework是固定短語，做某人的家庭作業(yè)，故選A。

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源： 題型：

【題目】I’d like an _____________.

A. milk B. fruit C. banana D. apple

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】根據(jù)短文內(nèi)容及首字母提示，填寫所缺單詞。

Do you know who invented tea? In fact, tea, the most popular drink in the world (after water), was invented by accident.

According to an ancient Chinese legend, the Emperor Shen Nong discovered tea w【1】 he was boiling drinking water over an open fire. Some l【2】 from a nearby bush fell into the water and remained there for some time. The Emperor n【3】 that the leaves in the water produced a pleasant smell. L【4】 he decided to taste the hot mixture. To his surprise, it was quite d【5】. And in his way, one of the world's favorite drinks was invented.

China is the home of tea with a history of o【6】 4,000 years. People all over China drink tea almost every day. Also tea is drunk by a large n【7】 of people in the world. Tea from China, along with silk and china, began to be known by the world more than 1,000 years ago and has been an important Chinese export since then. Tea leaves are produced mainly in the s【8】 of the Yangtze River, in the provinces of Zhejiang, Jiangxi and Fujian, because of the pleasant climate and rich soil there. Longjing, Wulong, Tieguanyin and Pu'er are a【9】 famous kinds of tea.

Over the past centuries, Chinese people have developed their own tea culture, which i【10】 tea planting, tea-leaf picking, tea making and so on. Tea is also a quite popular topic which is often mentioned in dances, songs, poems and novels.

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】When I was a baby, I _____ walk.

A. can’t B. couldn’t C. can

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】Human, Don’t Come too Close

Frequent touching from humans may change plants’ genes and slow their growth.

When we see babies or pets, we can’t help gently touching them to show our love. And they give us happy feelings back. But a recent study shows that it’s different for plants.

A study, published in The Plant Journal, shows that plants don’t “l(fā)ike” to be touched. That’s because touching changes their genes (基因) and, even worse, can slow their growth.

Professor Jim Whelan of the La Trobe Institute in Australia gave an explanation. “The lightest touch from a human, animal, insect, or even plants touching each other in the wind, leads to a huge gene change in the plant,” Science Daily reported.

In order to test the theory, the scientists did an experiment on plants. They grew a number of plants to the age of four weeks. Then they touched them with a paintbrush every 12 hours over a 36-hour period.

They found that as a response to the touch, the mitochondria (線粒體) in the plants had been partly destroyed. The mitochondria, as Science Alert noted, are the “powerhouse of the cell (細(xì)胞)”. The mitochondria produce energy for the rest of the cell in both animals and plants.

If this “powerhouse” is weakened, the plants will lose a large amount of energy that should have supported their growth. Whelan further explained to Science Daily, “If the touching is repeated, then plant growth is reduced by up to 30 percent.”

Although the process does have a strong effect on plants, usually the plants survive. Touching changes the plants, but it’s not necessarily a bad change.

According to Science Alert, frequent touching or moving plants will make them grow shorter than other ones. The researchers believe this change, in some way, could be helpful. It may help plants fight threats to their health such as insects and bad weather.

The new research findings have led to a deeper understanding of the plants’ response to touching. And the research might “open up new ways to reduce sensitivity (敏感性) and improve growth in the future”, Science Alert reported.

【1】Why did the scientists do the experiment?

A. To test if touching can change the genes of plants.

B. To show that plants’ and animals’ genes are different.

C. To tell when touching has effect on plants and animals.

D. To find out why some plants grow more slowly than others.

【2】What did the scientists find in their experiment?

A. Repeated touching shortened the plants’ life by four weeks.

B. Touching slowed down plant growth by reducing energy for growth.

C. Repeated touching made plants die sooner than they were expected to.

D. Mitochondria in the plants couldn’t produce energy because of touching.

【3】What do the scientists think of the fact that touch makes plants become shorter?

A. The plants will be more likely to be attracted by insects.

B. The plants will be more easily harmed by bad weather.

C. The plants will be less sensitive to being touched.

D. The plants will be better at fighting dangers.

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】Linda’s mother________ her a beautiful hat on her next birthday.

A．gives B．gave

C．will give D．has given

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】_______ people are talking about the movie star.

A. Lot of B. A lot C. A lot of D. Much

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】（海南省2015年中考）—My aunt me to Europe for vacation next month.

—Have a good time!

A. take B. took C. will take

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】Many students ______ changes to show themselves in class because the class size is too big.

A. don’t giveB. aren’t given

C. haven’t givenD. won’t give

查看答案和解析>>

同步練習(xí)冊答案