【C6】A．disturbB．initiateC．joinD．imitate

Researchers have established the（) between smoking and cancer.A linkB chainC joinD econo

A．Clapping hands.B．Gesture and imitation.C．Handshaking.D．Smell and taste.

The new bridge will ______ the island to the mainland.A．linkB．uniteC．joinD．combine

A．unbelievableB．imaginaryC．imitableD．idealized

与HAVING子句一起使用的子句是（)。A、GROUP BYB、ORDER BYC、JOIND、WHERE

【C15】A．illustrateB．sampleC．imitateD．cultivate