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【多选题】
在选取试剂时，以下操作正确的是( )。A.
取用试剂时应注意保持清洁
B.
固体试剂可直接用手拿
C.
可用量筒准确地量取溶液
D.
在分析工作中，所选用试剂的浓度及用量都要适当
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举一反三
【单选题】Jacky Chen is a ________ actor, people love his movies.
A.
rich
B.
successful
C.
common
【单选题】At the social gathering the weather is the subject which usually breaks the _____.A．iceB．iceber
A.
162. At the social gathering the weather is the subject which usually breaks the _____. A．ice
B.
iceberg
C.
topic
D.
Instance
【简答题】阅读短文，判断句子正(T)误(F)。 My aunt has a son. His name is Jacky. He's only three years old. He's very naughty (淘气的). Now Jacky is dirty. He washes his face in the bathroom and takes a bath in the bathtub. He ...
【单选题】He is Jacky Chen's fan. So Jackey Chen is his ________ film star.
A.
best
B.
worst
C.
favorite
D.
hosehold
【简答题】某计算机的IP地址为192.168.1.68，网关为192.168.1.254。该计算机现在无法访问IP地址为202.120.45.12的主机，若要检测该计算机在其网段内是否工作正常，应使用 ______命令。 A．ping 192.168.1.254 B．ping 192.168.1.68 C．ping 202.120.45.12 D．ping 127.0.0.1 A． B． C． D．
【单选题】听力原文：What was the topic of the lecture? (21)
A.
The Arctic land.
B.
Active volcano.
C.
Iceberg.
D.
Ice age.
【单选题】● 某计算机 IP 地址为 192.168.1.68，网关为 192.168.1.254。该计算机现在无法访问IP 地址为202.120.45.12的主机，若要测试该计算机在其网段内是否工作正常，应使用 （60） 命令。 （60）
A.
ping 192.168.1.254
B.
ping 192.168.1.68
C.
ping 202.120.45.12
D.
ping 127.0.0.1
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