下面不成对的颅骨是 ( )

下面不成对的颅骨是 ( )A.顶骨B.鼻骨C.上颌骨D.泪骨E.下颌骨

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He ______ a cold last week.

He ______ a cold last week.A. had caughtB. caughtC. has caughtD. has had

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补钾时尿量必须超过 ( )

补钾时尿量必须超过 ( )A.40mL/hB.30mL/hC.20mL/hD.10mL/hE.6mL/h

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Ⅱ. Vocabulary and Structure (15 points) Directions: There are 15 incomplete sent

Ⅱ. Vocabulary and Structure (15 points)Directions: There are 15 incomplete sentences in this section.

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In the last sentence of the second paragraph, "the higher places on earth" refer

In the last sentence of the second paragraph, "the higher places on earth" refers to ______.A. the hi

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