问题：
[单选题]Maintaining web security is ___________ for China.
A、a piece of cake
B、impossible
C、difficult
参考答案：
C
相关内容
- ● (单选题)The computer turn it __________ green, yellow, or red light.(2)
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- ● “To be or not to be----that i the quetion ” i taken from_______.
- ● Prepare game or ong for a leon i_____planning.
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- ● Will you be eating here or i thi to go? —Oh,____________,pleae.
- ● Maintaining web ecurity i ___________ for China.
- ● 1_____there i no rain,farming i difficult or impoible
- ● 1_____education i the intruction that occur when the intructor and tudent are eparated by ditance or time,or both
- ● Which do you think i ________, health or wealth？
- ● _______________will not continue if an ongoing operation i changed or deletedA、
