下列属于第一代头孢菌素的抗生素是（）。

[问答题]Practice 2　 Directions: Read the pieces taken from five letters to a magazine by five people commenting on an article about global warming. For questions 1 to 5, match the name of each person (1 to 5) to one of the statements (A to G) given below. Mark your answers on ANSWER SHEET.　　Mikhil Jaislnghanl:　　After reading your article “The Truth About Global Warming”, I’m no less concerned about the earth’s environmental condition. You say “Scientists are still differing with huge gaps in their knowledge.” But Lindzen, the writer of the article, is no closer to the truth simply because he can criticize. Global warming may be far from understood, but let us act to prevent it anyway, just in case the effects are real.　　John Leaver:　　It’s shameful that you present Lindzen’s views on climate change as “The Truth About Global Warming.” It seems that your magazine is keeping an open mind, even though you admit that most climate scientists disagree with Lindzen’s opinions. You characterize the view that waste gases should be cut as “very European. “ I take it that it is very American to pursue a policy of unlimited energy consumption without considering what most scientists and other countries think.　　Thomas Hervouet:　　How can we believe a man who holds that there is only a very weak link between lung cancer and cigarette smoking? Lindzen’s position is unacceptable because it shows his lack of knowledge about cancer. I believe that French President Jacques Chirac is more informed on global warming-- which no serious scientist denies--than President Bush, whose interests depend on the oil industry.　　Hans-Joachim Hell:　　What Lindzen says makes sense to mc. For years I’ve read articles on negative climatic change and greenhouse effect. The only agreement seems to be “We agree that we disagree. “Considering the recent chilly summers in Germany, I’ve no idea where the “warming” can be found. In past decades, summers were hot, almost unbearable. Now, in the midst of summer, we turn the heaters on and wear warm clothes.　　Derek Kickinson:　　The U.S. government should act for the American people by signing the Kyoto Agreement, instead of acting for Big Oil in America. Even if scientists cannot agree on the numbers, global warming is taking place, and this is not beneficial for the planet. The anti-Kyoto position of the U.S. government is a short-term political move, but the long-term losers will be the American people and the environment.　　Now match the name of each person (1 to 5) to the appropriate statement.　　Note: there are two extra statements.　　Statements　　

[多选题]导出分数的特性包括（）。

[单选题]透视中国社会问题的重要性不包括（）。

[名词解释题]短波

[单选题]配送的主要功能是（）

[单选题]（）是在相同温度条件下辐射能力最强的物体。

[单选题]膜免疫系统中的B细胞多是哪一型（）。

[判断题]项目实施阶段的主要工作就是确保项目的进展与预定计划及预计目标保持一致。

[判断题]北京20世纪80年代的十大建筑之一地铁东四十条站台东侧墙面上是《走向世界》巨型陶版壁画，西侧墙面上是《华夏雄风》大型陶瓷镶嵌壁画。（　　）

[单选题]低压是指对地电压在（）以下的电压。