下列关于箭头卡的描述，错误的是（）。A．箭头要卡在基牙的邻接面 B．箭头宽度不得过大

阅读下面材料，从每题所给的三个选项（A、B和C）中，选出最佳选项。

What should you take in with you when you take an exam? Pen, pencil, eraser, ruler … and don’t forget a bottle of water!

According to a study held in London, students who bring water into exams may improve their grades by up to 10%.

Scientists in UK did the study on 448 students. The students were studying for different degrees  at the University of East London. Only 25% of them entered the exam hall with water.

Scientists then compared their exam results with their normal schoolwork grades. They found that all those who had brought water with them got better grades by 2% to10%.

Scientists also predicted the students’ scores according to their normal schoolwork. They wrote down their possible scores on paper before exams.

It is unclear why drinking water improves exam results. But scientists say having enough water in our bodies and not feeling thirsty could have a helpful effect on our brains. Drinking water may also reduce anxiety (焦虑), which has a bad effect on exam performances.

“Whatever the explanation is, it is clear that students should try hard to stay hydrated (含水的) with water during exams,” one of the scientists said.

So next time, when you are going to have a big exam, try bringing a bottle of water with you. It may help you pass the exam!

小题1:According to the study, students who bring water to exams may ______.

A. get better scores

B. feel worried in exams

C. be smarter than others

小题2:How many students brought water during the exam in the study by the UK scientists?

A. 25.   B. 112.   C. 448.

小题3:Having enough water in exams ______.

A. makes the students smarter

B. helps the students stay calm

C. improves the students’ scores by 20%

小题4:The underlined word “predicted” means “______”.

A. 预测          B. 提高         C. 更正

小题5:What’s the best title for the passage?

A. The more water, the higher scores

B. Anxiety in the exams

C. Water helps in exams

值守人员职责如下（）及时、正确填写值守日志等有关记录。禁止无关人员进入所内。

A、按时巡视所内有无偷盗、破坏、消防等安全情况，发现异常情况及时报告调度。

B、保持所内干净、整洁

C、处理简单的故障

男性，15岁。反复呕血、黑便，皮肤淤斑1周，肝脾不大、血红蛋白60g／L，WBC6×10⁹／L，血小板10×10⁹／L。骨髓增生活跃，巨核细胞数增多，幼巨核细胞比例增多。

如患者发生头痛、呕吐，继而意识模糊，应考虑（）。

A.颅内出血的可能

B.低血容量休克

C.贫血致神情淡漠

D.脑膜炎

E.癫痫

读“某地区地质构造剖面示意图”，并回答问题。（11分）

⑴．图中①②③④四处，在地质构造上属于背斜的是        ，判断理由：                        在野外考察中，有时会见到背斜成谷现象，其原因是                                             。③处的地形属          山地。

(2)．下列地理事物与图中④处的地质构造在形成原因上相似的是         （多项选择）

A．渭河谷地

B．长江三蛱

C．汾河谷地

D．雅鲁藏布江大峡谷(3)．图中c地层为含水层，a、b、d各地层为隔水层，因此在           处（填数码）打井较有可能获得丰富的地下水。判断依据是                                  。

(4)．如果在这里修一条东西向的隧道，应选①还是②？＿＿＿＿，原因是＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿。

（5）．在图中地垒四条短线处用箭头表示出岩层运动的方向。.

代维公司应按框架协议的要求，建立代维工作（）和管理制度，落实管理人员和代维人员，以及办公用品、车辆、仪器和工具等（）。