保险合同中被保险人为享有保险合同约定的赔偿或给付保险金义务，必须支付相应的保险费。这

由于储集层岩性沿（）方向尖灭于泥岩中或渗透性逐渐变差而形成的圈闭，这种圈闭形成的油气聚集称岩性油气藏

A、上升

B、上倾

C、下倾

D、下降

某别墅室内精装修工程，客厅平面尺寸为9m×12m，吊顶为轻钢龙骨石膏板；装饰设计未注明吊顶起拱高度、主龙骨和吊杆固定点的安装间距。在施工中，对不同材料基体交接处表面抹灰采用加强网防止开裂；饰面板(砖)采用湿作业法施工。
工程完工后，依据《住宅装饰装修工程施工规范》(GB 50327—2001)和《民用建筑工程室内环境污染控制规范》(GB 50325—2001)进行了验收。

客厅吊顶工程安装主龙骨时，应按( )mm起拱。

A．9～27

B．12～36

C．18～42

D．24～48

Motorists over the age of 75 face compulsory tests of their eyesight and ability to drive under proposals being considered by ministers.

The biggest overhaul of motoring law in a generation could also lead to all drivers having to give assurances（保证）of their fitness to get behind the wheel every 10 years.

Other changes under consideration include issuing（发放）daylight driving licenses for motorists with night blindness, together with stricter checks on all drivers whose medical condition brought a threat to other road users.

It is understood that the proposals will be part of a review of the law governing the medical fitness of drivers that will be announced publicly by the summer.

The Driver and Vehicle Licensing Agency is dealing with a rising number of motorists who are concerned that they have conditions---from failing eyesight to epilepsy---that could affect their driving.

In 2006, the DVLA dealt with 600,000 motorists whose physical ability to drive needed to be recertified（重新认证）, a 20 per cent rise on the previous year. With an ageing population, the biggest challenge is dealing with the rising number of elderly motorists. By 2021, there will be an estimated three million drivers over the age of 70 on Britain’s roads.

Drivers must renew their licenses at the age of 70 and every three years thereafter. The applicant is legally required to tell the DVLA of any conditions that could weaken their ability behind the wheel.

Ministers have ruled out a compulsory maximum age for driving but will instead rely on tightening up the checks on motorists over the age of 75. The most likely option would be tests to ensure motorists were fit to drive. They would include an eyesight test and a cognitive（认知） test that would prove a driver's ability to react to road signs, driving conditions, pedestrians and vehicles.

However, checks are likely to be tightened at all ages. The strictest controls are expected to be imposed（强制） on motorists of any age who have had a heart attack or stroke. They could have to produce a doctor's approval to resume（重新得到）driving. Anyone making a false declaration would be guilty of a criminal offence.

小题1:Which of the following statements is TRUE according to the passage?

A．The new motoring law will come into effect by the summer．

B．Drivers over the age of 75 must renew their licenses every three years．

C．Doctors will decide whether one can get their driving licenses．

D．Drivers at all ages will be expected to provide their medical condition．小题2:What is the biggest challenge to the traffic safety in Britain according to the writer?

A．Ageing population．

B．Increasing number of cars．

C．Increasing number of elderly motorists．

D．Driving conditions．小题3:The underlined word “overhaul” in Paragraph 2 means _______．

A．change

B．consideration

C．concern

D．challenge小题4:What can be learned from the passage?

A．There will be more and more aged drivers in Britain．

B．Anyone can get a driving license as long as he/she is in good health．

C．Health tends to decline as one gets old

D．It will be guilty to make a false declaration．

球铁管有（）缺陷必须判废。

A.冷隔

B.裂纹

C.重皮

D.以上全部

要约人在要约发生法律效力之前，欲使其不发生法律效力而取消要约的意思表示是 ( )。

A．新要约
B．要约撤回
C．要约撤销
D．承诺