专四专八考试

【单选题】The idea of test-tube babies may make you either delighted at the wonders of modern medicine or irritated while considering the moral, or legal, or technological implications of starting life in a laboratory.But if you’ve ever been pregnant yourself, one thing is certain: You wonder what it’s like to carry a test-tube baby.Are these pregnancies normalAre the babies normal
The earliest answers come fromAustralia, where a group of medical experts at the Queen Victoria MedicalCenter in Melbourne have taken a look at the continent’s first nine successful in vitro pregnancies. TheAustralians report that the pregnancies themselves seemed to have proceeded according to plan, but at birth some unusual trends did show up. Seven of the nine babies turned out to be girls. Six of the nine were delivered byCaesarean section.And one baby, a twin, was born with a serious heart defect and a few days later developed life-threatening problems.
What does it all meanEven the doctors don’t know for sure, because the numbers are so small. The proportion of girls to boys is high, but until there are many more test-tube babies no one will know whether that’s something that just happened to be like that or something special that happens when egg meets sperm in a test tube instead of a fallopian tube. The same thing is true of the single heart defect. It usually shows up in only 15 out of 60,000 births in that part ofAustralia, but the fact that it occurred in one out of nine test-tube babies does not necessarily mean that they are at special risk. One thing the doctors can explain is the high number ofCaesareans. Most of the mothers were older, had long histories of fertility problems and in some cases had had surgery on the fallopian tubes, all of which made them likely candidates forCaesareans anyway.
TheAustralian researchers report that they are quite encourageD、All the babies are now making normal progress, even the twin with the birth defects.
According to the passage, what concern will the test-tube baby raise
A、Why the proportion of defected babies is so high.
B．Why the number ofCaesareans is so high.
C．Whether the pregnancies of test-tube babies would be normal.
D．Whether the test-tube babies would be encourage

网考网参考答案：C
网考网解析：
细节题。文章第一段末尾提出对试管婴儿的质疑：“Are these pregnancies normal Are the babies normal ”故选项C最符合题意。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>