题目内容
输入植物种子、种苗及其他繁殖材料的，应当在入境前7日报检。()
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下列程序的运行结果是 #include＜iostream.h＞ class Location{ private： int X.Y； public： void init(int=0，int=0)； void valueX(int val){X=val；} int valueX(){ return X；} void valueY
下面程序的输出结果为()。 #include＜iostream.h＞ class CStatic { public： CStatic(){val++；} static int val； }； int CStatic：：val=0； void main() { CSatic cs1； cout＜＜cs1．va1＜＜""； CStatic cs2； CStatic cs3,cs4； cout＜＜cs2．v
检查结果：类风湿因子弱阳性，血沉120mm/h，IgG19g/L，抗核抗体阳性，C3及CH550降低，抗双链DNA抗体增高。本例首选药物
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： The most surprising trend is the increasing use of illegal drugs, tobacco, and alcohol among youth. Children who use these substances increase the chance of acquiring life-long dependency problems. They also bring about greater health risks. Every day, three thousand children begin smoking cigarettes regularly; as a result, a third of these youngsters will have their lives shortened.
According to a study conducted by Columbia University on Addiction, children who smoke marijuana are 85 times more likely to use cocaine than ordinary people who never tried marijuana.
The use of illegal drugs among eighth graders is up 150 percent over the past five years. While surprisingly high, the prevalence of drug use among today's young people has returned to near-epidemic levels of the late 1970s. The most important challenge for drug policy is to change these dangerous trends.
Early drug use often leads to other forms of unhealthy and unproductive behavior. According to some survey, experts believe that illegal drugs are associated with premature sexual activity.
In 1995, 10.5 percent of all youngsters between twelve and seventeen years of age used illegal drugs on a past-month basis. This rate has risen notably compared to 8.2% in 1994, 5.7% in 1993, and 5.3% in 1992—the historic low in the trend since the 1979, high of 16.3%. The University of Michigan's 1996 Monitoring the Future study found that more than half of all high school students use illegal drugs by the time they graduate. So now the illegal use of drugs by youngsters has become a big problem in the United States.
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