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【单选题】
某一级反应的半衰期 t 1/2 是 30 min ,则其反应速率常数 k 为A.
20.8 min -1
B.
0.23 min -1
C.
0.023 min -1
D.
43.3 min -1
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【简答题】ISO14000系列标准的特点包括( ),( ),( ),( ),( ),( )。
【单选题】He said, "Mother, the girl is very lovely." → He _________ very lovely.
A.
said his mother that the girl was
B.
said to his mother that the girl is
C.
told his mother that the girl was
D.
spoke to his mother that the girl was
【单选题】患者，女性，26岁，因头痛、发热10余天，近5天伴呕吐入院，10余天前有面部皮肤疖肿史。入院查体：T38.6℃，意识清晰，言语不利，眼底检查见视盘水肿，右侧肢体无力。实验室检查：白细胞总数14.2×10 9 ／L，中性粒细胞85％。CT示左侧颞叶有环形低密度灶，增强后周围可见轻度强化。下列哪项神经系统体格检查对诊断颅内压升高最有价值（）。
A.
视盘水肿
B.
Lasequee征阳性
C.
Kernig征阳性
D.
颈部有抵抗感
E.
右侧肢体Babinski征阳性
【简答题】The baby laughed as if he ______ (understand)what the mother said.
【单选题】He said, “Mother, the boy is very naughty.” →He _____- very naughty.
A.
said his mother that the boy was
B.
said to his mother that the boy is
C.
told his mother that the boy was
D.
told his mother that the boy is
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