Junyan added that as a reporter she needed many different skills and ______ to learn new things.
A. was constantly challenged B. constantly challenged
C. was constantly challenging D. had constantly challenged
高二英语单项填空中等难度题
Junyan added that as a reporter she needed many different skills and ______ to learn new things.
A. was constantly challenged B. constantly challenged
C. was constantly challenging D. had constantly challenged
高二英语单项填空中等难度题查看答案及解析
______ is reported that many young people go to big cities to earn money.
A. This B. That C. It D. As
高二英语单项填空中等难度题查看答案及解析
We hope that as many people as possible________join us for the picnic tomorrow.
A. need B. can C. must D. should
高二英语单项填空中等难度题查看答案及解析
Teaching ___ child to cook will improve many of ___ skills that he or she will need later in life．
A．/; the B．a; the C．a ; / D．the; a
高二英语单项填空中等难度题查看答案及解析
听下面一段较长对话，回答以下小题。
1.Why does the woman look up the weather report?
A. She needs to pick up her son.
B. She doesn’t trust the weather news on TV.
C. She wants to know if she should get her umbrella.
2.What is the probable relationship between the speakers?
A. Husband and wife. B. Classmates. C. Co-workers.
高二英语长对话简单题查看答案及解析
A new report said that different types of plants can release some chemical into the air to help other plants. These chemical warnings all have the same purpose — to spread information about one plant's disease or infestation so other plants can defend themselves. But exactly how plants receive and act on many of these signals is still mysterious.
In this week’s Proceedings of the National Academy of Sciences, researchers in Japan offered some explanations. They had identified one chemical message and traced it all the way from release to action.
The scientists looked at tomato plants infested by a common pest, the cutworm. The researchers studied leaves from exposed and unexposed plants. They found one compound showed up more often in the exposed plants. The substance is called Hex Vic. When the scientists fed Hex Vic to cutworms, it knocked down their survival rate by 17%. The scientists identified the source of Hex Vic, and sprayed it lightly over healthy plants. Those plants were then able to start producing the cutworm-killing Hex Vic. Researchers confirmed that uninfected plants have to build their own weapons to fight off bugs and disease. How do they know when to play defense? They are warned first by their friendly plant neighbors.
It is a complex tale, and it may be happening in more plant species than tomatoes. It may also be happening with more chemical signals that are still unknown to us. Further studies are needed to increase agricultural efficiency.
1.Which is the way used by plants to warn their neighbors?
A. Using of winds.
B. Identifying the chemicals.
C. Releasing some chemicals.
D. Being exposed early.
2.It can be inferred from the text that ________.
A. farmers may benefit from the further studies
B. the phenomenon may be happening in less plant species than tomatoes
C. there are not chemical signals
D. plants are warned first by their neighbors
3.What’s the function of Hex Vic?
A. It sprays over healthy plants.
B. It shows up more.
C. It cures the disease.
D. It damages the cutworm’s body.
4.The passage is likely to appear in ________.
A. a newspaper advertisement
B. a physics textbook
C. a science magazine
D. a finance report
高二英语阅读理解中等难度题查看答案及解析
If you ask many different questions, you will________all the information you need to know.
A.quit B.acquire C．convince D．advocate
高二英语单项填空中等难度题查看答案及解析
It is reported that the children from the earthquake-stricken areas are in _________ need of love and attention.
A. typical B. concrete C. desperate D. actual
高二英语单项填空困难题查看答案及解析
Canada is a country _______ many different nationalities as well as one with foreign immigrants _______ the majority of its population.
A. making up of; made up
B. consisting of; making up
C. made up of; consists of
D. consisted of; made up
高二英语单项填空中等难度题查看答案及解析
Canada is a country ________ many different nationalities as well as one with foreign immigrants __________ the majority of its population.
A. making up of; occupied with B. consisting of; making up
C. made up of; consisting of D. consisted of; taking up
高二英语单项填空中等难度题查看答案及解析