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Why did it take so long to develop the X-ray microscope？
A．Funds for research were insufficient.
B．The source of illumination was not bright enough until recently.
C．Materials used to manufacture X-ray tubes were difficult to obtain.
D．X-ray microscopes were too complicated to operate.
答案
更多“Why did it take so long to develop the X-ray microscope？A．Funds for research were insuffic”相关的问题
第1题
Why did the accident take place？ Because ______.
A．the doctor drove badly
B．the car hit a tree
C．of the ice
D．the road was too bad
第2题
A.Who cares
B.Why do you ask
C.Which one
D.Why is it so
第3题
—Did you take enough money with you？ —Yes, I need______I thought I would.
A．not so many as
B．as many as
C．much more than
D．much less than
第4题
It was Monday, Mrs. Smith's dog was hungry, but there was not any meat in the house.
Considering that there was no better way, Mrs. Smith took a piece of paper, and wrote the following words on it, "Give my dog half a pound of meat." Then she gave the paper to her dog and said gently, "Take this to the butcher (卖肉者) , and he's going to give you your lunch today."
Holding the piece of paper in its mouth, the dog ran to the butcher's shop. It gave the paper to the butcher. The butcher read it carefully, recognized that it was really the lady's handwriting and presently did as he was asked to. The dog was very happy, and ate the meat up immediately.
At midday (正午), the dog came to the shop again. It gave the butcher a piece of paper again. After reading it, he gave it half a pound of meat once more.
The next day, the dog came again exactly at midday. And as usual it brought a piece of paper in. the mouth. This time, the butcher did not take a look at the paper, and gave the dog its meat, for he had regarded the dog as one of his customers.
But, the dog came again at four o'clock. And the same thing happened once again. To the butcher's more surprise, it came for the third time at six o'clock, and brought with it a third piece of paper. The butcher felt a bit puzzled. He said to himself, "This is a small dog. Why does Mrs. Smith give it so much meat to eat today？"
Looking at the piece' of paper, he found that there were not any words on it!
Mrs. Smith treated her little dog quite ______.
A．cruelly
B．kindly
C．badly
D．unfairly
第5题
Why did the early Pilgrims want to share their feast with the Indians？
A. To show friendship.
B. To ask for their help in the coming winter.
C. So they could eat some Indian bread puddings.
D. To try to teach them to grow crops.
第6题
According to Helen Smith, why did the men kill others before they commit suicide？
A．They want to take revenge on the society.
B．They want to vent their anger on others before they die.
C．They want companionship instead of loneliness when they die.
D．They want to satisfy their sexual desire before their death.
第7题
Why did the MTV Networks' spokeswoman say the number of freelancers was unclear？
A．The figure rises and falls all over the year.
B．The company wants to keep it as a secret so that they can better stand the protest.
C．As they are only freelancers, their payrolls are not included in the financial system of the company.
D．They do not want to treat freelancers the same as full-time employees.
第8题
Why did the green bean get the name " Kaffa" ？
A．Because Kaldi loved his home village very much.
B．Because Kaldi's goats loved the green beans very much.
C．Because the beans were discovered in a place so named.
D．Because the beans could be picked and dried.
第9题
A.all what
B.what all
C.all that
D.that all
第10题
A.I am too excited to say a word
B.Why is he so happy today
C.How are you
D.Did something bad happen
