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【单选题】
In the sentence 'In 1902 he secured a position as an examiner in the Swiss patent office in Bern.' , the word 'secure' probably means ______.A.
acquired
B.
attached
C.
closed
D.
fastened
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反馈参考答案：
举一反三
【简答题】简述双抗体夹心法的原理
【单选题】根据世界卫生组织的规定,高血压的诊断标准为血压
A.
≥140/90 mmHg
B.
>120/80 mmHg
C.
>135/85 mmHg
D.
>135/80mraHg
E.
>120/75 mmHg
【简答题】简述双抗体夹心法的原理
【单选题】Unless you are trying to lose weight to please yourself, it’s going to be tough to keep your ___________ level high.
A.
concentration
B.
attention
C.
focus
D.
motivation
【简答题】Please introduce yourself.
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