It’s been 71 years since our country its founding ________ October 1949.
A.on B.in C.at D.for
九年级英语单选题简单题
It’s been 71 years since our country its founding ________ October 1949.
A.on B.in C.at D.for
九年级英语单选题简单题查看答案及解析
It’s been three years we last saw our primary school classmates
A．since B．for
C．until D．after
九年级英语单项填空中等难度题查看答案及解析
It’s been three years we last saw our primary school classmates
A． since B． for C． until D． after
九年级英语单项填空中等难度题查看答案及解析
It’s been three years we last saw our primary school classmates.
A. since B. for C. until D. After
九年级英语单项填空中等难度题查看答案及解析
_________ since we last saw our primary school classmates.
A. It is three years B. It has been three years
C. Three years has passed D. all the above
九年级英语单项填空中等难度题查看答案及解析
–It has been thirty years since I my hometown.
—How time flies! Great changes in our hometown in the last thirty years.
A. leave, take place
B. left, have been taken place
C. left, have taken place
D. have left, took place
九年级英语单项填空中等难度题查看答案及解析
—It has been thirty years since I my hometown.
— How time flies! Great changes in our hometown in the last thirty years.
A. leave; take place B. left; have been taken place
C. left; have taken place D. have left; took place
九年级英语单项填空中等难度题查看答案及解析
China says 16 endangered finless porpoises（江豚）have been found dead since the beginning of the year and experts blame water pollution and climate change for pushing the species toward extinction．
The freshwater porpoise-popularly known in Chinese as the"river pig"-mainly lives in China's Yangtze River and two lakes linked to the river．
Authorities（官方）have discovered 10dead porpoises in Dongting Llake in the central province of Hunan since March, according to a statement by the government of Yueyang City, which is located on the lake's shore． Another six dead porpoises have been found in Poyang Lake in the eastern province of Jiangxi since the beginning of the year． Experts warn that the species will be extinct within a matter of years．
Wang Kexiong, a researcher at China's Institute of Hydrobiology, said water pollution, shipping and sand dredging（挖掘）were all possible contributing factors to the recent deaths．
Many rivers in China have become heavily polluted with poisonous waste from factories and farms-pollution blamed on more than three decades of rapid economic growth and slow enforcement（实施）of environmental protection laws．
The report said climate change also could be to blame as the dry weather has caused water levels to drop and makes it more difficult for the porpoises to find food． Tests have shown that some of the porpoises are believed to have died of starvation（饥饿）．
In 2006, China was estimated（估计）to have only 1,200 finless porpoises left． That same year, the Baiji-a freshwater dolphin also native to the Yangtze River-was declared extinct． Earlier this year, a survey found just 65"river pigs"in Dongting Lake and 300-400 in Poyang Lake．
Following the recent deaths, Yueyang City promised to investigate and increase protection of the remaining porpoises in Donting Lake．
1.How many river pigs are estimated to live in Dongting Lake？
A.49
B.55
C.59
D.65
2.The following factors of river pigs' deaths are mentioned EXCEPT__________．
A.water pollution
B.climate change
C.food shortage
D.illegal fishing
3.We can learn from the text that__________．
A.river pigs' deaths can be reduced if measures are taken in advance
B.river pigs' deaths are completely caused by human beings' activities
C.climate change is likely to stop economic growth in China
D.economic growth always has a negative effect on the environment
4.The number of river pigs is listed in Paragraph 7 to________．
A.show they have become extinct
B.call for more effective protection
C.show they are on the edge of extinction
D.show the importance of raising them in labs
九年级英语阅读单选中等难度题查看答案及解析
As the largest developing country, China since it was founded in 1949.
A. made great progress B. has made great progress
C. made a decision D. has made mistakes
九年级英语单项填空简单题查看答案及解析
-- The 19th National Congress of the CPC(中共十九大) ______ in Beijing last year.
-- Our country has been into a new era(时代) since then.
A. held B. was held C. has held D. is held
九年级英语单选题中等难度题查看答案及解析