消化系统由消化管和消化腺组成。
参考答案:对
You can’t see things clearly through a telescope unless it is _____ correctly to your sight.
A.adjusted
B.examined
C.checked
D.tested
保理业务从性质上讲,是()。
A、国家信用;
B、商业信用;
C、个人信用;
D、银行信用;