软件测试如果能发现软件中危害行大的错误，那么该软件测试的价值就越高，一般将软件错误分为几级（）
A.1级
B.2级
C.5级
D.4级
参考答案：D
The audience waited until the curtain rose and then_____ laughter at the sight of the funny actor.
A．burst out
B．burst into
C．broken into
D．began with
肤质的类型？
