Generally, a material with a sour taste, such as vinegar or lemon juice, contains an acid.

The material with which I’m going to make skirts _

Some advanced materials are an old standard with a new twist. The newest fiberopt

The third paragraph ______.A．generally agrees with the first paragraphB．has no connection

A semiconductor is a material with a _____.A.conductivity higher than a normal conductorB.

What should have been found with the letter？A．A copy of the contract.B．Related materials o

He was disappointed by his failure to _______ the top job with the bank.A) safeB) sou