---It was dangerous to throw that bottle out of the window. You could have hurt someone.

---I’m so sorry! I _______ .

A．am not thinking

B．wasn’t thinking

C．haven’t thought

D．don’t think

对怀疑有结核患者进行了口对口呼吸的急救人员，应在多少周以后检查是否感染结核（）

A.4周

B.8周

C.12周

D.16周

E.18周