Ques: Read the following article and select the best answer. Article: Cancer is feared by everyone. And there is more and more fear about cancer. Not the disease itself -- there is no such thing as a high incidence rates of cancer. Except for lung cancer, mostly caused by cigarette smoking, the incidence rates are not on the rise. However, some kinds of cancer are decreasing. But the fear of cancer is catching, and the country stands at risk of an anxiety. The earth itself is coming to seem like a huge carcinogen . The ordinary, more or less, scientific statement that something between 80 and 90 percent of all cancers are due to things in the environment is taken to mean that none of us will be safe until the whole environment is "cleaned up." This is not at all the meaning. The 80-percent calculation is based on the unthinkable differences in the incidence of cancer in various societies around the world -- for example, the high incidence of liver cancer in Africa and the Far East, stomach cancer in Japan, breast cancer in Western Europe and North America, and the relatively low figures for breast cancer in Japan and parts of Africa and for liver cancer in America. These data show there may be specific environmental influences, but largely based on personal life-style, which determines the incidence of various forms of cancer in different communities -- that is all the data suggest. The overall incidence of cancer, counting up all the cases, is probable roughly the same everywhere. Question: According to the passage, the incidence of cancer is generally believed _ . - to be based on inactive life style - to be due to anxiety - to result from environmental influences - to be caused by heavy smoking
Ans: to result from environmental influences

Ques: Read the following article and select the best answer. Article: Cities need to put efforts to deal with pollution and clear the air. Chinese cities will need to put efforts to clear up the sky when a new department to improve regional air quality is set up by 2015, according to the latest plan released by the State Council. Besides the existing pollution control program for SO2, regional emission caps for other certain chemicals will be established in the three key air polluting areas-- the Yangtze River Delta, Pearl River Delta and the Beijing-Tianjin-Hebei region. Coal-consumption caps will also be tried out in some areas, according to the plan. "The plan is aimed at dealing with regional air pollution--such as acid rain and smog--which have become increasingly obvious in China in recent years and caused a severe threat to people's health," Zhang Lijun, vice-minister of environmental protection, said in an interview on Monday. "The air quality in a city affects the regions nearby because pollutants Can travel through the atmosphere," said Chai Fahe, vice-director of Chinese Research Academy of Environmental Sciences. "So efforts to reduce air pollution in a single city, targeting a certain pollutant will not be enough," Chai said. Zhang said, "The country's major industrial districts--the Yangtze River Delta, Pearl River Delta and the Beijing-Tianjin-Hebei region--have recorded more than 100 misty days annually in recent years." These three regions, home to at least 200 million people, occupy only 6. 3 percent of the country's area but consume 40 percent of the country's coal and produce half of its steel, according to official figures. Studies also show that the visibility in eastern regions of China has dropped by 7 to 15 km compared to that in the early 1960s, as a result of air pollution. Liaoning province, the Shandong Peninsula, Wuhan in Hubei province and its surrounding area, the Changsha-Zhuzhou-Xiangtan region in Hunan province, the Chengdu-Chongqing region, and the western coast of the Taiwan Straits are also listed as areas to carry out such regional... Question: . The main purpose of the passage is _ . - to inform readers of the damage caused by air pollution - to introduce the new plan to control air pollution - to provide official figures of air pollution levels - to point out the regions affected by air pollution
Ans: to introduce the new plan to control air pollution

Ques: Read the following article and select the best answer. Article: That summer an army of crickets started a war with my father. Dad cared for insects no more than Mamma, but he could tolerate a few living in the basement. Mamma was a city girl and she said a cricket was just too noisy. Then to support her point she wouldn't go to bed. She drank coffee and smoked my father's cigarettes and paced between the sofa and the TV. Next morning she threatened to pack up and leave, so Dad drove to the store and hurried back. He sprayed poison from a jug. When he was finished he told us that was the end of it. For a couple of weeks we went back to find dead crickets in the laundry. He suggested that we'd all be better off to hide as many as we could from Mamma. I fed a few dozen to the cat who I didn't like because he scratched for no reason. However,soon live crickets started showing up in the kitchen and bathroom. Mamma was upest because she thought they were the dead crickets coming back,but Dad said these were certainly new ones. He fetched his jug of posion and sprayed all over until the whole house smelled of posion, and then he sprayed the basement again. A couple of weeks later, when both live and dead crickets kept turning up, Dad emptied the basement of junk. Then he burned a lot of old newspapers and magazines which he said the crickets had turned into nests. While we ate supper that evening, the wind lifted some flames onto the wood pile. The only gasoline was in the lawn mower's fuel tank but that was enough to create an explosion big enough to reach the house. Once the roof caught, there wasn't much anyone could do. After the fire trucks left, Mamma took the others to Aunt Gail's. I helped Dad and Uncle Burt carry things out of the house and pile them by the road. We worked into the night and we didn't talk much, while all around the noise of crickets broke our silence. Question: What do we know about the author's mother? - She didn't like insects at all. - She liked insects more than his father. - She cared for insects very much. - She could only tolerate a few insects.
Ans:
She didn't like insects at all.