2016年6月英语六级阅读预测：选词填空押题

六级选词填空，说难不难，说简单也不简单，既然离考试没几天了，自然要练一练了。沪江英语教研为大家带来英语六级填空押题预测，不妨考前练练手哦！

In a recent paper in the journal Science, Venter and hiscolleagues ___1___ that they had created the smallest living and reproducingorganism. Their creation is a simple cell, with only the genes that areessential for life; it is larger only than those found in viruses and otherentities that rely on hosts(寄主) for ___2___ functions.

Venter and his team created their organism through aprocess of ___3___ and error. They began by using their knowledge of biology todeduce the minimum set of genes that would be required for life. However, thatapproach ___4___.

The most important result of the Venter team's work wasto ___5___ how little we know about the basic biology of life. Most of the 473genes take care of housekeeping: They make proteins, keep DNA in good repair,and are ___6___ for the cell's membrane (薄膜) and cytoplasm (细胞质). But there are 149genes whose function is unknown. In other words, the purpose of nearlyone-third of the genes, which needed to keep the organism ___7___, andreproducing remains a ___8___.

Of the 149 genes with unknown functions, 70 have astructure that at least hints at their role in the cell. But we know nothingabout the other 79, except that in these organisms, in this environment, lifeis ___9___ without them.

All of this implies many exciting discoveries ahead. Andyet, when it comes to practical, commercial objectives, the news is ___10___more sobering.

（答完题才可以看答案哦！）

Keys:

1. announced

2. essential

3. trial

4. failed

5. reveal

6. responsible

7. alive

8. mystery

9. impossible

10. considerably

摘自：《沪江英语》

学生记者：李莎