某同学利用“研究凸透镜成像”的实验装置,记录的某种透镜成像情况如下表: 次序蜡烛

题型:填空题

问题:

某同学利用“研究凸透镜成像”的实验装置,记录的某种透镜成像情况如下表:

次序蜡烛到透镜的距离

(u)/cm

像  的  性  质
倒立或正立放大或缩小
122倒立缩小
218倒立放大
38正立放大
由凸透镜成像规律,根据上表可推知该凸透镜的焦距应大于______cm,而小于______cm.

考点:凸透镜对光的作用
题型:填空题

(4)完形填空

An earthquake hit Kashmir on Oct. 8, 2005. it took some 75,000 lives, __21_  130,000 and left nearly 3.5 million without food, jobs or homes. __22__ overnight, scores of tent villages bloomed across the region, tended by international aid organizations, military __23__ and aid groups working day and night to shelter the survivors before winter set in.

Mercifully, the season was mild. But with the __24__ of spring the refugees(难民) will be moved again. Camps that _25__ health care, food and shelter for 150,000 survivors have begun to close as they were __26_  intended to be permanent.

For most of the refugees, the thought of going back brings __27__ emotions. The past six months have been difficult. Families of as  many as 10 people have had to shelter under a single tent and share cookstoves and bathing __28__ with neighbors. “They are looking forward to the clean water of their rivers,” officials say. “They are dreaming of free fresh fruit. They want to get back to their herds and start farming again.” But most will be returning to __29__ but heaps of ruins. In many villages, electrical line have not been repaired, nor have roads. Aid workers __30__ that it will take years to rebuild what the earthquake took away. And for the thousands of survivors, the recovery will never be complete.

Yet the survivors have to start somewhere. New homes can be built onto the stones, bricks and beams of old ones. Spring is coming and it is a good time to start again.

21.   A) injured     B) ruined           C) destroyed         D) damaged

22.   A) Altogether   B) Almost           C) Scarcely          D) Surely

23.   A) ranks      B) equipment        C) personnel         D) installations

24.   A) falling     B) emergence      C) arrival             D) appearing

25.   A) strengthened    B) aided       C) transferred         D) provided

26.   A) never          B) once       C) ever                D) yet

27.   A) puzzled        B) contrasted   C) doubled             D) mixed

28.   A) facilities     B) instruments    C) implements          D) appliances

29.   A) anything         B) something      C) everything        D) nothing

30.   A) account          B) measure        C) estimate          D) value

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项目活动覆盖率的分子是()

A.实际参与某项目干预活动的人数

B.参与项目活动的目标人群数

C.实际参与项目活动的目标人群人数

D.接受大众媒体的目标人群数

E.参与项目活动的总人数

题型:填空题

有限责任公司经批准变更为股份有限公司时,折合的实收股本总额不得高于公司的( )。

A.净资产额

B.注册资本额

C.资产总额

D.总股本

题型:填空题

急性红白血病下列哪项是错误的()

A.外周血可见幼红和幼粒细胞

B.幼红细胞POX阳性

C.幼红细胞有巨幼样变

D.幼红细胞糖原染色阳性明显增高

E.骨髓红系明显增生

题型:填空题

使通电物体发热到白炽状态而发光,这种光源称为()

A.热光源

B.白炽光源

C.热辐射光源

D.热能光源

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