Not until he questioned the manager several times ___________ that the engineer-in-chief had gone to an important meeting.
A. did he tell B. he told C. was he told D. he was told
高三英语单项填空中等难度题
Not until he questioned the manager several times ___________ that the engineer-in-chief had gone to an important meeting.
A. did he tell B. he told C. was he told D. he was told
高三英语单项填空中等难度题查看答案及解析
Not until he called the secretary three times ______ that the manager went to an important meeting.
A. did he tell B. he told C. was he told D. he was told
高三英语单项填空困难题查看答案及解析
Not until he called the secretary three times _________ that the manager went to an important meeting.
| A．did he tell | B．he told | C．was he told | D．he was told |
高三英语单项填空困难题查看答案及解析
I knew I could not finish the homework _____.
| A．by the time he had come | B．before he came |
| C．until he has come | D．when he comes |
高三英语单项填空简单题查看答案及解析
Not until he failed in the last examination _________ he should have spent more time on study.
A. did he realize B. he realized C. did he not realize D. he didn’t realize
高三英语单项填空中等难度题查看答案及解析
I wondered why John kept it a secret. It was not until he three times that he told me the truth.
A. asked B. was asking
C. had asked D. had been asked
高三英语单项填空中等难度题查看答案及解析
Not until ________a third time ________that he had given birth to the reading system for the blind called Braille.
A． Louis Braille tried；he announced
B． did Louis Braille try；he announced
C． Louis Braille had tried；did he announce
D． had Louis Braille tried；had he announced
高三英语单项填空中等难度题查看答案及解析
Not until ________a third time ________that he had given birth to the reading system for the blind called Braille.
A．Louis Braille tried; he announced
B．did Louis Braille try; he announced
C．Louis Braille had tried; did he announce
D．had Louis Braille tried; had he announced
高三英语单项填空中等难度题查看答案及解析
Dolphin or not a dolphin? That is the question! You see，there are several types of dolphins．Some are saltwater dolphins while others are river dolphins．
“What are the 32 types of dolphins?”When people are asking the question，they are actually referring to the saltwater dolphins in oceans and seas．The river dolphins living in fresh water are not included in these species．But what would be the answer in this case if we ask．“Dolphin or not a dolphin?”The answer would obviously be yes．River dolphins still belong to the dolphin family．
Among the 32 types of dolphins do not actually wear the word“dolphin”in their names，such as the tucuxi，while others actually have the word“whale”as part of their names even if they are not whales but in fact，belong to the dolphin family，for example，the melon-headed whale and the killer whale．So what would be the answer to the question“Dolphin or not a dolphin?”in these cases? It would’be yes．All these species do belong to the dolphin family．
Another question that people ask is．“Are the sea animals that perform at aquariums(水族馆)all dolphins?”So，it always seems to come back to the question，“Dolphin or not a dolphin?”Well the answer is no in this case．The sea animals that perform there are not all dolphins．The beluga which people tend to think belong to the dolphin family because they show what seems like a smile，like most dolphins，are in fact a species of the whale family．
Now that you read these facts about dolphins，you probably realize that certain sea animals may appear to be part of the dolphin species and that others seem to be part of the whale family but in either case，it is not obvious and can be surprising when you identify a sea animal as being a dolphin or not a dolphin．That is the question ！
1.Which of the following statements about dolphins is RIGHT according to the passage?
A. The tucuxi is a type of dolphin living in rivers．
B. There are 32 types of dolphins in the world altogether．
C. All the sea animals that perfom at aquariums are dolphins．
D. The melon-headed whale and the killer whale actually belong to the dolphin family．
2.What do we know about the majority of the dolphins?
A. They appear friendly． B. They perform for audience．
C. They look like whales． D. They live in fresh water．
3.What could be added about dolphins before the last paragraph if you were the author?
A. The living areas of dolphins．
B. Training of dolphins at aquariums．
C. The eating habits of dolphins．
D. Further identification of dolphins．
4.This article can be classified as_________．
A. a news report B. 1iterary fiction
C. popular science D. a travel diary
高三英语阅读理解中等难度题查看答案及解析
Tom was running out of time in the exam, but there still remained several questions________.
A. to be answered B. to answer C. answered D answering
高三英语单项填空中等难度题查看答案及解析