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【单选题】
以下关于儿童21-三体综合征诊断与预防的叙述中，错误的是（ ）A.
若母亲为 21q22q 平衡易位携带者，子代发病风险率较低
B.
羊水细胞或绒毛膜细胞染色体检查 可实现 产前诊断
C.
孕母年龄愈大， 子代罹患该病的 风险率愈高
D.
染色体核型分析是该病确诊依据
E.
典型患者淋巴细胞的荧光原位杂交呈现 3 个 21 号染色体的荧光 信号
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【简答题】Some people want to slow down the rate of progress, ______(但谁也不能阻止时代的前进).
【简答题】文房四宝是哪四样东西?
【单选题】Some people want to go hunting, ______ others want to gofinishing.
A.
or
B.
because
C.
while
D.
since
【单选题】"A rose is a rose is a rose is a rose" is _____'s famous quote.
A.
Ernest Hemingway
B.
Willa Cather
C.
Edith Wharton
D.
Gertrude Stein
【单选题】Some people want to keep up with the Joneses because they ______.
A.
want to be as rich as their neighbours
B.
want others to know or to think that they are rich
C.
don’t want others to know they are rich
D.
want to be happy
【单选题】Dixie Rose Makes Another Stride in Recovery The St. Louis Derby winner Dixie Rose had the cast changed on his broken hind leg, his veterinarian said yesterday, and the plates and screws that were inse...
A.
He won the St. Louis Derby.
B.
He won three of his last four races.
C.
He was unable to start the Holloway Stakes.
D.
He was not expected to win the Holloway Stakes.
【单选题】Little about her own safety, though she was in great danger herself.
A.
did Rose care
B.
Rose did care
C.
Rose does care
D.
does Rose care
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