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【简答题】
Why is ocean exploration not so expensive as space travel Because ______ for submersibles to get away from the Earth’s gravity.
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参考答案：
参考解析：
刷刷题刷刷变学霸
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【单选题】男性，55岁。5年前因胃癌行全胃切除术，近1年渐感头昏、乏力，活动后心悸、气急。红细胞数1.5×1012/L，血红蛋白55g/L，白细胞数3.2×109/L，血小板65×109/L，网织红细胞0.001 (0.10%)。MCV129fl，MCH36pg， MCHC34%。最可能诊断是（）
A.
缺铁性贫血
B.
再生障碍性贫血
C.
巨幼细胞性贫血
D.
溶血性贫血
E.
骨髓病性贫血
【单选题】Whether the eyes are "the windows of the soul" is debatable; that they are intensely important in interpersonal communication is a fact. During the first two months of a baby’’s life, the stimulus tha...
A.
they don’’t like to keep their eyes on the face of the speaker
B.
they need not communicate through eye contact
C.
they don’’t think it polite to have eye contact
D.
they didn’’t have much opportunity to communicate through eye contact in babyhood