承包经营耕地的单位或者个人连续( )弃耕抛荒的,原发包单位应当终止承包合同,收回发包的耕地。
A.2年
B.3年
C.4年
D.5年
参考答案:A
The direct exchange of securities between investors without using an intermediary or the services of a broker occurs in which of the following markets()
A. The third market.
B. The fourth market.
C. The over-the-counter market.
下列不属于PC机连网设备的是( )。
A.MODEM
B.摄像头
C.集线器
D.以太网卡