下列（）风险不属于特约商户收单业务风险。
A、合谋伪冒交易风险
B、手输卡号欺诈风险
C、诈骗抢劫风险
D、洗单风险
参考答案：C
Never ______ so excited because it is the first time that I ______ such a fantastic experience.
A．I have been; had
B．have I been; have had
C．have I been; had had
D．I have been; have
下列属于合同约定解除条件的是( )。
A．因不可抗力致使不能实现合同目的B．在履行期限届满之前，当事人一方明确表示或者以自己的行为表明不履行主要债务C．当事人协商一致，可以解除合同D．当事人一方迟延履行主要债务，经催告后在合理期限内仍未履行
