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【单选题】
2014年初，中央一号文件《关于全面深化农村改革加快推进农业现代化的若干意见》正式发布，一号文件高度重视我国的粮食安全问题，明确提出要实施“以我为主、立足国内、确保产能、适度进口、科技支撑”的国家安全战略。下列对这一战略理解不正确的是（）A.
确保我国的粮食安全必须坚持独立自主自力更生的原则
B.
要充分发挥我国丰富的农业资源，提高粮食产量
C.
要加强科技创新，用科技推动粮食的生产
D.
在开放的环境下，解决粮食问题要更好地统筹两个市场两种资源
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举一反三
【单选题】A diode can be usedas a constant-voltage reference in a circuit, the diode is
A.
photodiode
B.
light-emitting diode
C.
Schottky barrier diode
D.
Zener diode
【单选题】Most modern diodes are based on semiconductor ( ). In a p-n diode, conventional current can flow from the ( ) side (the anode) to the ( ) side (the cathode), but cannot flow in the ( ) direction. ( )
A.
p-n junction, p-type, n-type, opposite
B.
p-n junction, n-type, p-type, opposite
C.
n-p junction, A-type, K-type, opposite
D.
p-n junction, A-type, K-type, opposite
【单选题】( ) ---- Glad to meet you. --- ___________.
A.
Thank you
B.
Glad to meet you, too
C.
That’s nice
D.
That’s good
【单选题】--: Glad to meet you. :______________
A.
Thank you.
B.
Glad to meet you too.
C.
That’s nice.
【单选题】A:Glad to meet you! B:——
A.
Glad to meet you too
B.
Glad to meet you to
C.
Glad nice to meet you
D.
see you
【单选题】--Glad to meet you. -- .
A.
That’s nice.
B.
Thank you
C.
Glad to meet you, too
D.
That’s good
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