2023年职称英语考试《理工类》考试共65题，分为单选题和多选题和判断题和计算题和简答题和不定项。小编每天为您准备了5道每日一练题目（附答案解析），一步一步陪你备考，每一次练习的成功，都会淋漓尽致的反映在分数上。一起加油前行。

1、Black HolesMost scientists agree that black holes exist but are nearly impossible to locate. A black hole in the universe is not a solid object, like a planet, but it is shaped like a sphere (球体). Astronomers (天文学家) think that at the center of a black hole there is a single point in space with infinite (无限的) density (稠密).This single point is called a singularity (奇点). If the singularity theory is correct, it means that when a massive star collapses, all the material in it disappears into the singularity. The center of a black hole would not really be a hole at all, but an infinitely dense point. Anything that crosses the black hole is pulled in by its great gravity.Although black holes do exist, they are difficult to observe. These are the reasons,?No light ｏｒanything else comes out of black holes. As a result, they are invisible to a telescope.?In astronomical terms, black holes are truly. Fｏｒexample, a black hole formed by the collapse of a giant star would have an event horizon (视界) only 18 miles across.?The nearest black holes would be dozens of light years away from Earth. One light year is about 6 trillion (万亿) miles. Even the most powerful telescopes could not pick out an object so small at such a great distance.In 1994 the Hubble Space Telescope provided evidence that black holes exist. There are still answers to be found, however, so black holes remain one of the mysteries of the universe. (2007年)The sun is the heaviest star in the universe.【单选题】

A.Right

B.Wrong

C.Not mentioned

正确答案:C

答案解析:题干大意：在宇宙中，太阳是最重的星体。用中心词the sun回到原文定位，文章并未提及与太阳相关的信息。故答案选C。

2、His imagination transformed shadows into a monster. 【单选题】

A.a beast

B.a ghost

C.a giant

D.an angel

正确答案:A

答案解析:monster:怪兽；beast:野兽，这两个词意思接近；ghost:魔鬼、幽灵；giant：巨人；angel:天使。

3、If we leave now, we should miss the traffic.【单选题】

A.direct

B.stop

C.mix

D.avoid

正确答案:D

答案解析:我们现在走，应能避开交通高峰。本题考查引申意义，miss指“想念”，引申意思是“错过，避开”，和avoid“避免”是近义词，其他三项都是常用词，和答案意义差异较大，干扰性不强。

4、The Threat to KiribatiThe people of Kiribati are afraid that one day in the not-too-distant future, their country will disappear from the face of the earth-literally. Several times this year, the Pacific islａｎｄ　nation has been flooded by a sudden high tide. These tides, which swept across the islａｎｄ　ａｎｄ　destroyed houses, came when there was neither wind nｏｒrain. "This never happened before," say the older citizens of Kiribati.What is causing these mysterious high tides? The answer may well be global warming. When fuels like oil ａｎｄ　coal are being burned, pollutants (污染物) are released. These pollutants trap heat in the earth\'s atmosphere. Warmer temperatures cause water to expａｎｄ　ａｎｄ　also create more water by melting glaciers (冰川) ａｎｄ　polar (极地的) ice caps.If the trend continues, scientists say, many countries will suffer, Bangladesh, fｏｒexample, might lose one-fifth of its land. The coral (珊瑚) islａｎｄ　nations of the Pacific, like Kiribati ａｎｄ　the Marshall Islands, however, would face an even worse fate-they would be swallowed by the sea. The loss of these coral islands would be everyone\'s loss. Coral formations are home to more species than any other place on earth.The people of these nations feel frustrated. The sea, on which their economies have always been based, is suddenly threatening their existence. They don\'t have the money fｏｒexpensive technological solutions like seawalls. ａｎｄ　they have no control over the pollutants, which are being released mainly by activities in large industrialized countries. All they can do is to hope that industrialized countries will take steps to reduce pollution.High tides used to attack Kiribati when there was strong wind ｏｒheavy rain.【单选题】

A.Right

B.Wrong

C.Not mentioned

正确答案:A

答案解析:题干大意：当风强雨大的时候，高潮经常袭击基里巴斯。文章第一段最后两句提到：These tides，which swept across the islａｎｄ　ａｎｄ　destroyed houses, came when there was neither wind nｏｒrain. "This never happened before," say the older citizens of Kiribati. 当无风无雨的时候这些高潮来横扫岛屿和破坏房屋，一位老人说：“这在以前从来都没有发生过”。意思就是说现在无风无雨也会出现高潮，而在过去只有大风大雨的时候才会出现高潮。故答案选A。

5、Most chemical reactions of an organic compound involve only a few ofits numerous atoms; the remainder stay unchanged. 【单选题】

A.majority

B.distribution

C.rest

D.stability

正确答案:C

答案解析:remainder和rest都表示“其余、其他”；maj ority：多数、半数以上；distribution：分配物、分配；stability:稳定性、固定、牢固。