问题 选择题

下面加线词语使用正确的一项是      (    )(2分)

A.听了这个故事,同学们都忍俊不禁地笑了起来。

B.老师语重心长地给我讲了沉迷网络游戏的害处。

C.他工作能力强,真是一位德高望重的好班长。

D.晚会结束前,她献上了一曲《烛光里的妈妈》,唱得栩栩如生

答案

答案:B

题目分析:A“忍俊不禁”与后面的“笑了起来”重复。C “德高望重”应用于形容年纪大的人,用于句中的“班长”不合适。D“栩栩如生”形容作品、绘画中的事物如同活的一样,不能用于唱歌。

点评:所学学习和生活中常见的、出现较多的词语、成语、俗语,要做到知其意,善运用。平时要在积累上下工夫,对于易于混淆的词语、成语、俗语要进行比较、积累。

选择题
阅读理解

Eyeglasses correct many different types of sight problems, including nearsightedness, farsightedness or astigmatism (散光). Trying to understand those different numbers on an eyeglass prescription (验光单) requires understanding the measurements optometrists (验光师) use when fitting you for corrective lenses (镜片).

Diopters (屈光度)

The numbers on your prescription are given in diopters, whose short form is "D". It is used to measure the focusing power, or amount of correction.

O.S. and O.D.

Optometrists use the Latin short form O.S. and O.D. to distinguish between your eyes. O.S. refers to your left eye, while O.D. refers to the right eye.

Generally, your prescription will show a number for O.S. and O.D. (given in diopters). The farther this number is on a number line from zero, the more correction your eyeglasses should provide. A plus sign means the eye is farsighted, while a minus sign means the eye is nearsighted.

Spherical Value

This plus or minus number for each eye is called the spherical value, or the degree of nearsightedness or farsightedness you have. Its short form is "S."

Cylinder

If you have an astigmatism, the optometrist will also measure its degree. The higher the number (given in diopters) marked as the cylinder of astigmatism, (its short form is "C"), the more astigmatism there is in that eye.

Axis

An astigmatism is also measured in terms of its axis, which is a number between 0 and 180. The axis of the astigmatism does not relate to the amount of cylinder, just the location of the irregularity of the astigmatism on that particular eye.

小题1:According to the first paragraph, various sight problems ______.

A.should be understood by the patients

B.can be avoided by wearing corrective lenses

C.should be tested by different optometrists

D.can be corrected by wearing eyeglasses小题2:If you need a pair of corrective lenses, the optometrist will first value the numbers of ______.

A.Diopters

B.Spherical Value

C.Cylinder

D.Axis小题3:From the prescription above we can learn that Li Hua ______.

A.is farsighted

B.is nearsighted

C.has no astigmatism

D.is normal in sight小题4:The text is probably taken from ______.

A.an education report

B.a school bulletin

C.a local newspaper

D.an encyclopedia (百科全书)