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搜题
【单选题】
慢性再生障碍性贫血患者首选的治疗药物是A.
雌激素
B.
雄激素
C.
糖皮质激素
D.
甲氨蝶呤
E.
抗胸腺细胞球蛋白
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【简答题】While I was looking out of the window, I saw an old homeless man crossing the street, carrying a suitcase. Many times I looked on far away, feeling 36 for the homeless, but did nothing. I did 37 some ...
【多选题】考虑属性的文法G(S)，其中说法正确的是（）产 生 式 语 义 规 则S→XYZ Z.h := S.a X.c := Z.g S.b := X.d -2 Y.e := S.bX→x X.d :=2*X.cY→y Y.f := Y.e*3Z→z Z.g :=Z.h+1
A.
S 有继承属性 a ，综合属性 b
B.
X 有继承属性 c 、综合属性 d
C.
Y 有继承属性 e 、综合属性 f
D.
Z 有继承属性 h 、综合属性 g
【单选题】—Would you mind looking after my dog while I’m on vacation? —___________.
A.
Of course not
B.
Yes,I’d be happy to
C.
Not at all ,I have no time
【单选题】While I was waiting for her, I killed time ______ looking in the show windows.
A.
by
B.
with
C.
in
D.
over
【单选题】While I was waiting for her， I killed time__________ looking in the show windows.A.by###SX
A.
While I was waiting for her， I killed time__________ looking in the show windows. A.by
B.
with
C.
in
D.
with
【简答题】已知复数z= 1-i 1+i +1，则 . . z . =______．
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