题目内容

I don’t know if he tomorrow. If he , I’ll meet him.

A. will come; comes B. comes; comes

C. will come; will come D. comes; will come

练习册系列答案
相关题目

You can say “________” when you ask someone for help.

A. Nice to meet you.

B. I'm sorry to trouble you.

C. Can you tell me your address?

D. Where are you from?

--- Excuse me, ______ to the nearest bookshop, please?

--- Go straight and take the second turning on the left.

A. where the way is B. which the way is

C. where is the way D. which is the way

（题文）No one tells us________，so we need your help

A. how we should do B. what should we do

C. how to do it D. what to do it

Do you still remember _______?

A. that he said B. what he said C. did he say that D. what did he say

Would you like to know ____they will do it or not.

A. if B. that C. whether D. why

Does he know ______?

A. what’s your name B. what name is your C. what your is name D. what your name is

---David, look at the man in white over there. Can you tell me _______. ?

----He is a doctor.

A. who is he B. who he is C. what is he D. what he is

Monarch butterflies from eastern Canada make the most amazing journey in the insect world. Each year, this butterfly travels about 3 000 miles to its winter home in central Mexico(墨西哥). How can it fly so far? And why does it make this long and dangerous trip? Scientists still don't have an answer.

For many years, people in Mexico wondered where the orange and black butterflies came from every winter. Then, in 1937, a scientist started to follow and study the butterflies. For the next 20 years, he discovered that one butterfly started its journey in Canada. Four months later, it arrived in Mexico.

The length of the butterflies' trip is only one part of the mystery. Another amazing thing is that the butterflies always return to the same area in central Mexico.

How do the butterflies find their way back to the same place? This is an interesting question because only every fourth generation(代) makes the trip south. In other words, the butterfly that travels to Mexico this year is the great great grandchild of the butterfly that traveled there last year.

Each year, four generations of a Monarch butterfly family are born. Each generation of the family has a very different life. The first generation is born in the south in late April. It slowly moves north, reproduces(繁衍), and then dies. Each of these generations of butterflies lives for generations are born, reproduces, and die. Each of these generations of butterflies lives for only two or five weeks. In the autumn, the fourth generation of butterflies is born. This generation has a much longer life. It lives for about eight months. This generation of butterflies makes the amazing journey back to the winter there, and in the spring they reproduce and then die. Their offspring will be the first generation of the next circle of life.

Today, people are still studying the Monarch butterfly. But they are not clear about everything.

1.The best title of the passage can be ________．

A. Family of Monarch butterflies

B. Mystery of Monarch butterflies

C. Monarch butterflies' birthplace

D. Monarch butterflies' winter home

2.It took the scientist ________to find out that Monarch butterflies came from Canada.

A. 20 years B. four months C. five weeks D. eight months

3.We know that the ________ generation of Monarch butterflies travel back to central Mexico.

A. first B. second C. third D. fourth

4.The underlined word “offspring” in the passage is closest in meaning to ________．

A. seasons B. butterflies C. children D. parents

5.Which statement is TRUE according to the text?

A. Monarch butterflies spend winter in eastern Canada.

B. The four generations have the same length of life.

C. Some generations die on the way north of Canada.

D. Scientists are clear about everything of the butterflies.

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