The environmental problems in China may worsen if __________ unsolved.
A．makingB．remainedC．keepingD．left
D

試題分析：考查動詞和狀語從句的省略式：句意：中國的環(huán)境問題如果任由不解決會更嚴重的。四個選項都可以接過去分詞unsolved，make使得，但是應該是被動式，remain仍然，應該是主動式，keep保持，應該是被動，leave使…保持…狀態(tài)，也是被動，只有D項符合。在if和left之間省略了they are。選D。
練習冊系列答案
相關習題

科目：高中英語 來源：不詳 題型：單選題

Young adults ______ older ones are more likely to prefer sports and become enthusiastic sports fans.
A．other thanB．more thanC．less thanD．rather than

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

--- How can I use iPhone 4s?
--- Just refer to the _________.
A．explanationsB．expressionsC．directionsD．Preparations

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Children are encouraged to _________some pocket money for Christmas gifts.
A．put upB．put asideC．put inD．put down

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Security was such a major concern at the conference that no journalists could approach the meeting zone without ________ the special pass.
A．commandingB．issuingC．producingD．involving

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

The singer told us that her new album would ________ the next month.
A．come upB．come outC．come off D．come across

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

用方框中所給單詞的適當形式填空，每詞限用一次。
spend   between   safe   Friday   black
 
小題1:Tony is funny singer with ___________ eyes and curly hair.
小題2:Mike often _________ his weekends going hiking with his classmates.
小題3:Turn left and you will see the library ________ the supermarket and bank.
小題4:Many people prefer to travel by plane. They think a plane is faster and ______ than a train.
小題5:Lucy can’t go to the picnic this _________ afternoon because she is having a speech contest.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

Not long ago, people thought babies were notable to learn things until they were five or six months old．Yet doctors in the United States say babies begin learning on their first day of life．
Scientists note that babies are strongly influenced by their environment．They say a baby will smile if her mother does something the baby likes．A baby learns to get the best care possible by smiling to please her mother or other caregiver．This is how babies learn to connect and communicate with other human beings．
One study shows that babies can learn before they are born．The researchers placed a tape recorder on the stomach of a pregnant woman．Then, they played a recording of a short story．On the day the baby was born, the researchers attempted to find if he knew the sounds of the story repeated while in his mother．They did this by placing a device in the mouth of the newborn baby．
The baby would hear the story if he moved his mouth one way．If the baby moved his mouth the other way, he would hear a different story．The researchers say the baby clearly liked the story he heard before he was born．They say the baby would move his mouth so he could hear the story again and again． 
Another study shows how mothers can strongly influence social development and language skills in their children．
Researchers studied the children from the age of one month to three years．The researchers attempted to measure the sensitivity of the mothers．The women were considered sensitive if they supported their children’s activities and did not interfere unnecessarily．They tested the children for thinking and language development when they were three years old．Also, the researchers observed the women for signs of depression．
The children of depressed women did not do as well in tests as the children of women who did not suffer from depression．The children of depressed women did poorly in tests of language skills and understanding what they hear．
These children also were less cooperative and had more problems dealing with other people．The researchers noted that the sensitivity of the mothers was important to the intelligence development of their children．Children did better when their mothers were caring, even when they suffered from depression．
小題1:What does the experiment in which newborn babies heard the stories prove?
（no more than 5 words）
小題2:In the passage, what factors are mentioned that influence intelligence development in babies?
（no more than 8 words）
小題3:Which group of children did the worst in tests of language skills?
（no more than 11 words）
小題4:What is the main idea of the passage?
（no more than 8 words）

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

We often see the situation of employers_____________ people they want, while job seekers
can't find the employers they want.
A．having difficulty findingB．to have difficulty finding
C．having difficulty to findD．to have difficulty to find

查看答案和解析>>

同步練習冊答案