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【多选题】
普通辉石与普通角闪石的区分是根据( )。A.
辉石呈长柱状，而角闪石呈短柱状
B.
辉石解理交角为87°，而角闪石解理交角为124°
C.
辉石条痕呈棕红色，而角闪石条痕呈浅绿色
D.
辉石为黑绿色，而角闪石为黑色
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皮皮学刷刷变学霸
举一反三
【单选题】It was not until he arrived in class _____ realized he had forgotten his book.
A.
when he
B.
that he
C.
and he
D.
he
【简答题】Paraphrase the following sentences from unit 1, passage of Book 3. His background was certainly not glamorous. (Para.4)
【简答题】造血组织由 ( )、( ) 和基质细胞组成 。
【单选题】John F Kennedy studied at Harvard and during his senior year he wrote a thesis called 'Why England Slept', which later was published as a book. This was not his only book. Whilst recovering from a bac...
A.
The Strategy of Peace
B.
A Time to Kill the Germans
C.
Tales from the Ocean
D.
Profiles in Courage
【简答题】造血组织主要由 和 组成。
【简答题】造血组织由_____组织和______细胞构成
【单选题】John was so ____ in his book that he did not hear the door bell ring.
A.
engaged
B.
occupied
C.
absorbed
D.
concentrated
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