单选题WhydidthegirlinviteUncleSmithtodinner?A.Shelikedhim.B.Shehadnootherfriends.C.Shewantedtohaveabirthdayparty.

单选题Wheredoestheconversationtakeplace?

单选题______ a true word is spoken in jest. A. A lot of B. A few of C. Many D. Much

单选题Every human has a very unique arrangement of the skin on his finger and this arrangement is unchangeable. Scientists and experts have proved the uniqueness (独特性) of fingerprints and discovered that no exactly similar pattern (式样) is passed on from parents to children, though nobody knows why this is the case. The ridge (脊状) structure on a person's lingers does not change with the growth and is not affected by superficial (表面的) injuries. Burns, cuts and other damage to tile outer part of the skin will be replaced in time by the new one which bears a reproduction (再现) of the original pattern. It is when the inner skin is injured that tile arrangement will be destroyed. Stone criminals make use of tilts fact to remove their own fingerprints but this is a dangerous and rare step to take. Fingerprints call be made very easily with printer's ink. They can be recorded easily. With special methods, identification can be achieved successfully within a short time. Because of the simplicity (简单) and economy of this system, fingerprints have often been used as a method of solving criminal cases. A suspected man may deny a charge but this may be in vain. His finger- prints can prove who he is even if his appearance has been changed by age or accident. When a suspect leaves fingerprints behind at a scene of a crime, they are difficult to detect with the naked eyes. Special techniques are used to "develop" them. Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.

单选题--I He never drinks milk, does he?-- ______.

单选题If you are the judge, you must ______ your personal feelings.[A] set at[B] set beside[C] set out[D] set aside

单选题Can you imagine what a girl will look like ______ she comes across a rat in her room?

单选题WhatdoesSusanwanttodothissummer?A.Joinahealthclub.B.Getagoodjob.C.Giveupsmoking.

单选题When did the man move into the new flat?

单选题When a pencil is partly in a glass of water, it looks as if it ______.[A] breaks[B] has broken[C] were broken[D] had been broken

单选题Whatdoesthemanmean?A.Hehasanothermeetingtoattendonthatday.B.HeisOKeitherday.C.Hecan'tattendafour-dayconference.

单选题

单选题The sentence "School and Einstein did not mix well." really means ______.

单选题WhatisthewomandoinginBeijing?

单选题--He is anxious to know the result of the examination. --But it will soon ______ to everyone.

单选题{{B}}D{{/B}} Whatever our differences as human beings are, we all think we're more like the rest of the animal world than we realize. It is said that we share 40 percent of our genetic (遗传的) structure with the simple worm. But that fact has helped Sir John Sulston win the 2002 Nobel Prize for Medicine. Sir John is the founder of the Sanger Institute in Cambridge, which was set up in 1992 to get further understanding of the human genuine (染色体组). To help them do this, they turned to the worm. The nematode (线虫类的) worm is one of the earliest creatures on planet earth. It is less than one millimeter long, completely transparent and spends its entire life digging holes through sand. But it still has lots to say about human life, and what can be done to make it better. What the worm told Sir John and his colleagues was that each of cells in the human body is programmed like a computer. They grow, develop and die according to a set of instructions that are coded in our genetic make-up. Many of the diseases that humans suffer from happen when these instructions go wrong or are not obeyed. When the cell refuses to die but carries on growing instead, this leads to cancer. Heart attacks and diseases like AIDS cause more cell deaths than normal, increasing the damage they do to the body. Sir John was the first scientist to prove the existence of programmed cell death.