验钞机发出的______能使钞票上的荧光物质发光;家用电器的遥控器发出的____

题型:填空题

问题:

验钞机发出的______能使钞票上的荧光物质发光;家用电器的遥控器发出的______能用来控制电风扇、电视机、空调器等.

考点:红外线紫外线
题型:填空题

We live in an amazing world, reading the following news and you will find it yourself.

News 1: Bao Xishun is the tallest man in the world. He is 2.36 metres tall. He Pingping is the shortest man in the world. He is only 0.73 metres tall. They are Chinese. On July 13th, Bao Xishun married (娶) a girl and He Pingping took part in their wedding ceremony (婚礼).

News 2: In the USA, a seventh-grader, Aidan Murray Medley went fishing in the sea one morning. The 12-year-old boy caught a 250-kilogram shark! It took Aidan 28 minutes to catch the shark. It was so hard that his body lost all feeling. Aidan now has the Florida(佛罗里达洲) record (记录). He beat (打破) a 232-kilogram catch from 1981.

News 3: A young sheep climbs a tree to feed on leaves in a park in the southern Swedish town of Lund. The sheep climbed to a height (高度) of seven metres and spent an hour and a half in the tree before returning to the ground.

小题1:  Where do the tallest man and the shortest man in the world come from?

A.China.

B.America.

C.Sweden.

D.Florida.小题2: How old is the boy who caught the fish?

A.13.

B.12.

C.250.

D.7.小题3:How long did it take Aidan to catch the fish?

A.Nearly half an hour.

B.Over half an hour.

C.An hour and a half.

D.12 hours.小题4:Which of the following statements is TRUE?

A.Bao Xishun married He Pingping.

B.The tallest man and the shortest man are not both from China.

C.The boy caught the biggest fish in the world.

D.The sheep climbed very high and spent a long time in the tree.小题5:Which can be the best title?

A.The Tallest Man’s Wedding Ceremony

B.The Amazing World

C.A Boy Caught the Biggest Fish

D.A Sheep Climbed a Tree

题型:填空题

心脏神经官能症

A.发热伴结膜充血
B.发热伴关节肿痛
C.发热伴肝脾大
D.发热伴咯血
E.发热伴胸痛上述症状常见于下列哪种疾病

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下列现象属于何种物态变化现象:

(1)二氧化碳灭火器喷出干冰灭火是                   现象;

(2)严寒时,室外的水管子被冻住了,是                    现象;

(3)烧红的铁块放入冷水中,会听到一阵响声,并看到水面上冒“白气”,这一过程经过了先

                                      的物态变化。

题型:填空题

井眼轴线是一条倾斜直线的井叫()。

A、水平井

B、3段式定向井

C、5段式定向井

D、斜直井

题型:填空题

微丝参与细胞分裂过程的阶段是()。

A.前期

B.前中期

C.中期

D.后期

E.胞质分裂

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