2016年6月六级选词填空预测
六级考试在即，新东方网英语六级频道为大家带来六级选词填空预测，希望可以为大家带来帮助，预祝大家取得好成绩!In a recent paper in the journal Science, Venter and his colleagues ___1___
that they had created the smallest living and reproducing organism. Their
creation is a simple cell, with only the genes that are essential for life; it
is larger only than those found in viruses and other entities that rely on
hosts(寄主) for ___2___ functions.
Venter and his team created their organism through a process of ___3___ and
error. They began by using their knowledge of biology to deduce the minimum set
of genes that would be required for life. However, that approach ___4___.
The most important result of the Venter team's work was to ___5___ how
little we know about the basic biology of life. Most of the 473 genes 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 149 genes whose
function is unknown. In other words, the purpose of nearly one-third of the
genes, which needed to keep the organism ___7___, and reproducing remains a
___8___.
Of the 149 genes with unknown functions, 70 have a structure that at least
hints at their role in the cell. But we know nothing about the other 79, except
that in these organisms, in this environment, life is ___9___ without them.
All of this implies many exciting discoveries ahead. And yet, when it comes
to practical, commercial objectives, the news is ___10___ more sobering.
A) additional
B) announced
C) assessed
D) considerably
E) essential
F) failed
G) impossible
H) separately
I) inquiring
J) mystery
K) alive
L) occasions
M) responsible
N) reveal
O) trial
1. announced
2. essential
3. trial
4. failed
5. reveal
6. responsible
7. alive
8. mystery
9. impossible
10. considerably
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