-
题目：
单选题
A官方文件
B时事新闻
C历法、数表、通用表格和公式
D以上都是
答案：
<查看本题扣1积分>
-
在女儿墙上安装避雷带时，直线段上支架的间距为（）
-
家庭心理辅导不同于行政教育的工作方法，它强调心理辅导师与求助者之间的平等关系，要把握（）的原则。
-
下面哪些是世界银行的可贷款形式（）。
-
HBV感染时产生的具有保护性的抗体是（）
-
痉挛性截瘫（）
-
在PowerPoint自定义动画中，可以设置＿＿＿＿。
-
骨骺损伤固定时间为（）。
-
在水利水电工程地质勘察中，应采用（）手段了解地基岩土层的岩性、构造、进行准确分层和水文地质试验。
-
Today ,as in every other day of the year ,more than 3000 U.S. adlescents will smoke their first cigarette on their way to becoming regular smokers as adults. During their lifetime,it can be expected that of these 3000 about 23 will be murdered,30 will die in traffic accidents, and nearly 750 will be killed by a smoking-related disease. The number of deaths attributed to cigarette smoking outweithts all other factors, whether voluntary or involuntary, as a cause of death. Since the late 1970s, when daily smoking among high school seniors reached 30 precent , smoking rates among youth have declined . While the decline is impressive ,several important issues must be raised. First, in the past several years,smoking rates among youth have declined very little. Second,in the late 1970s ,smoking among male high school seniors exceeded that among female by nearly 10 percent . The statistic is reversing.Third ,several recent studies have indicate high school dropouts have excessively high smoking rates, as much as 75 percent . Finally, thouth significant declines in adolescent smoking have occurred in the past decade,no definite reasons for the decline exist. Within this context,the Naional Cancer Instiute (NCI) began its current effort to determine the most effecive measures to reduce smoking levesl among youth. By "dropout" the author means（）.
-
第二次鸦片战争以来，沙皇俄国通过一系列不平等条约侵占了中国150多万平方公里的领土，这些不平等条约有()