Read the article and select the best answer. Article: Snow-melting Agent A heavy snow can kill pests and this means a good harvest next year.This will bring as well as trouble to urbanites. On Nov.16,2003,a cold air current brought a heavy snow to Beijing.To prevent traffic jams,related government departments mobilized people to clear off snow on streets. One of the most effective ways to clear off snow on roads is to scatter snow-melting agent on the roads.The major component of the snow-melting agent is salt.The snow-melting agent can make snow stop from freezing,make it easier to clear off the road,and allow traffic to flow smoothly.But it also brings about some hidden dangers.In the spring of 2003,over 300 000 trees in Beijing urban districts died.After analyzing soil around these trees,experts discovered that the salt content of these soils was 392 times higher than normal.Where did the excessive salt come from?After investigating,forestry experts found that when clearing snow in the winter,people usually heap snow containing snow-melting agent at trees' roots,and that when the snow melts,this agent penetrates the soil and increases its salt content.The snow-melting agent indirectly killed the trees. Statistics show that during a heavy snow in 2002,over 1000 tons of snow-melting agent was scatterred on streets in Beijing.Snow water containing a large amount of snow-melting agent got into the soil through sewers. In addition,salt in the snow-melting agent can expedite the corrosion of steel bars in concrete buildings and cause the concrete to crack and peel,shortening the life of roads. Scientists and government officials are required to solve traffic problems caused by heavy snows as soon as possible and at the same time try to reduce the negative effects of the snow-melting agent.This is a difficult problem placed before them.Related authorities have framed some local criteria to regulate the production and use of snow-melting agents. Now,more harmless snow-melting agents are being developed.Now that even snow-melting agents that meet today's criteria must... Question: According to the text,the most practical way to clear off snow is to _ . Options: A: use snow-melting agent as much as possible B: only use more harmless snow-melting agent C: encourage people to clear snow with their hands D: use more snow vehicles
C

Read the article and select the best answer. Article: My mind went blank when I saw the gun pointing against the car window as we pulled out of the garage. This can't be happening to me. Then I felt the gun, cold, against my head, and I heard my friend Jeremy saying, "What do you want? Take my wallet," but at the time I thought of nothing. I remember being a little annoyed when the gunman pulled me from the car by the hair. I remember the walk to the house --- Jeremy, me, the two men with two guns. I remember the fear and anger in the gunmen's voices because Jeremy was being slow, and I remember wondering why he was being slow. I did not realize that Jeremy had thrown the keys into the bush. But I remember that sound of the gun hitting Jeremy's head and the feeling as the man who had hold of my hair released me. And I remember the split second when I realized he was looking at Jeremy, and I remember wondering how far I could run before he pulled the trigger. But I was already running, and upon reaching the car across the street, I didn't crouch behind it but screamed instead. I remember thinking there was something ridiculous and illogical about screaming "Help, help!" at eight o'clock on a Tuesday evening in December and changing my plea to the more specific "Help, let me in, please let me in!" But the houses were cold, closed, unfriendly, and I ran on until I heard Jeremy's screams behind me announcing that our attackers had fled. The neighbors who had not opened their doors to us came out with baseball bats and helped Jeremy find his glasses and keys. In a group they were very brave. We waited for the police to come until someone said to someone else that the noodles were getting cold, and I said politely, "Please go and eat. We're O.K." I was happy to see them go. They had been talking of stricter sentences for criminals, of bringing back the death penalty and how the President is going to clean up the country. I was thinking, they could be saying all of this over my dead body, and I still feel that stiffer sentences wouldn't change a thing. In a rush all... Question: The police were rather angry because _ . Options: A: the author was not hurt and gave a false alarm B: they thought it was a case of little importance C: the author and Jeremy could not tell the police anything D: the gunmen had already fled when they arrived on the scene
B

(Question)
Read the article and select the best answer. Article: Your weight has been important since the moment you were born. Maybe you even know what your birth weight was. Most newborns weigh between 6 and 9 pounds, but some may weigh more and some less. But very quickly, a baby gains weight and everyone is glad about that because it means the child is growing bigger and stronger. As you get older, your weight is still important. It's something your parents and doctor will probably keep an eye on. When you go for a checkup, the doctor often will record your height and weight and compare it with what it was the last time you came in. The doctor wants to check whether you have a healthy weight because weighing too much or too little can be a problem. But these days, being overweight is more common than being underweight. In the last 30 years, a growing number of kids and teenagers have developed weight problems. Today, 1 out of 3 kids and teens between the ages of 2 and 19 are overweight. Many grown-ups understand what it's like to have weight problems, since 2 out of every 3 adults are overweight..wfsqzkss. For kids and adults, weighing too much can lead to illnesses and health problems. And a kid who is overweight might be made jokes on or find it hard to keep up with friends on the playground. When people talk about being overweight, they mean that someone has more body fat than is healthy. Everyone has some body fat, but extra fat can influence someone's health and ability to walk, run, and get around, as well as how the person looks and his or her self-respect. Question: Why is everyone happy hearing a baby become fatter? Options: A: The baby is growing healthily. B: The parents are rich enough. C: The mother has enough milk. D: The family is in good situation.
(Answer)
A