对“为什么不从事本专业了？”的最佳回答是

A . 蓝波段 B . 绿波段 C . 红波段 D . 近红外波段

A . A、1-6 B . B、1，3-6 C . C、2-6 D . D、1-5

A . 保持沉默 B . 悄然离开病房 C . 对患者说："您不必担心，手术一定会成功的。" D . 对患者说："您能告诉我您担心的问题是什么吗？" E . 对患者说："如果您不去想这件事，您的心情很快就会好起来的。

A . 我们已经耗费了很多时间和精力，所以不应该放弃方案 B . 我们有几个很好的方案，如果第一个无效，应该尝试第二个 C . 当我们知道方案无效时，情况有了很大改变。我们不得不重新开始，如定义问题等 D . 如果方案无效我们应从外部取得帮助，如聘用顾问等。

A . 流值和VMA满足要求 B . 空隙率和VFA接近中值 C . 稳定度接近低值 D . 密度接近峰值

A . 700±90个 B . 1000±90个 C . 2700±90个 D . 3600±90个

A . 渗水 B . 低温抗裂性 C . 水稳定性 D . 高温稳定性

A . 6 B . 5 C . 4 D . 3

A . 700个 B . 1200个 C . 2700个 D . 3600个

A . 清楚的了解问题 B . 对知识有一个完整的理解 C . 引进更多知识回答部分问题

第一篇 Volunteers are being recruited(征募) to eat raw potatoes in the first human trials of a vaccine grown in genetically engineered vegetables. Researchers in Texas hope that people who eat the potatoes will be protected against common gut(肠，肠子) infections. They believe this technique could prove to be a cost-effective way of growing vaccines in developing countries where such diseases are still killers. Other researchers previously succeeded in using similar techniques to produce potential vaccines Now Hugh Mason and his colleagues at Texas A & M University(得克萨斯农业及机械大学) their plant vaccines on mice and plan to recruit 15 volunteers for a human trial. The team first tested the technique in tobacco plants. They took a strain of Escherichia coli(大肠杆菌) bacteria that causes food poisoning, and identified the part of the poison which binds to its victims gut cells. They then used a modified plant bacterium called Agrobacterium tumefasciens to transfer the segment of DNA which manufactures the binding protein into the tobacco plant. Under normal circumstances, these bacteria transfer packets of DNA into plant cells to force the plant to manufacture the nutrients they need. But in the modified bacteria, the DNA package includes the gene to pro- duce the binding protein. Once the foreign DNA segment was incorporated(结合，合并) into the tobacco's own DNA, the bacteria were killed off with antibiotics. Mason's team then grew these modified tobacco plants and found that they produced the E. coli binding protein. Proof of success came when the tobacco leaves were mashed up(捣碎) and squirted into the stomachs of mice. Mason says that within days the mice started producing specific antibodies to the E. coli poison, but suffered no ill effects from digesting the binding protein. Mason then produced genetically engineered potatoes and fed these to mice, with similar results. Mason's team have used plants to produce vaccines against a number of other infectious agents. For example, they have made a vaccine using a protein from the shell of the Norwalk virus, which causes diarrhoea(腹泻) in children. A third vaccine has also been produced in tobacco using a surface protein from the hepatitis B virus. But Mason says that so far they have only been able to produce small amounts of it in potatoes. Although a vaccine already exists against hepatitis B, a cheaper plant version could make mass immunisation(群众性免疫) possible. One problem with growing potatoes to produce vaccines is that cooking tends to destroy the protein component of the vaccine, so they must be eaten raw. Mason thinks that bananas may be a better option. "One banana could potentially produce a whole host of different vaccines," says Mason. The purpose of this text is______。 A. to prove that doctors don't like vegetables B. to amuse the reader by telling some funny things C. to describe how vegetables can grow vaccines for their own use D. to tell the reader about a cheaper way of growing vaccines

A.粗针穿刺活检 B.钼靶X线摄片 C.切取活检 D.近红外线扫描 E.细针穿刺细胞学

A．积极倾听 B．表扬 C．延缓评价 D．批评

A.坐骨神经封闭 B.局部涂骨质宁擦剂（外用药） C.暂行牵引，按摩和理疗等 D.通过间盘镜摘除突出髓核 E.立即手术行髓核切除

A．在曲线图上求取相应于密度最大值、稳定度最大值、相应于空隙率要求范围的中值或目标空隙率、相应于沥青饱和度范围的中值的沥青用量取平均值作为OAC1 B．以各项指标均符合技术标准的沥青用量范围OACmin~OACmax的中值作为OAC2 C．通常情况下，取OAC1及OAC2的结果接近时，取中值作为计算的最佳沥青用量OAC D．根据实践经验和公路等级、气候条件、交通情况，调整确定最佳沥青用量OAC

A．那您可以看看其他便宜点的。 B．价格高当然有它高的道理了。 C．您的眼光真好,这是我们昨天刚到的新款,车的性能绝对好,而且车的线条特别优美,像您这样年轻漂亮的女士开再合适不过了!您买了绝对不会后悔! D．您可以贷款买车呀。

A. 短效口服避孕药 B. 宫内节育器 C. 安全期避孕 D. 人工流产 E. 避孕套

A．对原来的专业不感兴趣 B．原专业不好找工作 C．家庭渊源深厚，且自身对该工作非常感兴趣，投入时间精力学习 D．应聘的公司薪资颇丰

A．社会存在和社会意识 B．可知论和不可知论 C．唯物主义和唯心主义 D．辩证法和形而上学

A．（5）（6）（4）（1）（3）（2） B．（5）（1）（3）（6）（4）（2） C．（1）（3）（2）（5）（4）（6） D．（3）（2）（5）（1）（4）（6）