Priestley’s best-known play is ______.

Priestley doesn’t think he has an iron will, and he is not sorry about it.()

A、many examples

B、seriousness

C、the matter of sleep

Priestley thinks he will become more famous if people know what is in his mind when he is sleepless. ()

Mr. Priestley wanted the author to take part in the festival most probably because ______.

A．the author was the best in class

B．the author didn't have confidence in himself

C．the author wasn't good at expressing himself

D．the author needed to be motivated

请将在光合作用研究中起重要作用的科学家和他们的贡献进行匹配：

  A．Joseph Priestley  Ⅰ．用同位素示踪证明氧的来源

  B．Jan Ingenhousz   Ⅱ．证明绿色植物释放氧气

  C．F.F.Blackman    Ⅲ．证明了光合作用的两个阶段，一个是依赖于光不依赖温

               度，一个是不依赖光依赖温度

  D．C.B.van Niel    Ⅳ．证明光合作用只发生在植物绿色部位，并且需要阳光

  E．Melvin Calvin   Ⅴ．提出光合作用释放的氧不是来源于CO₂，而是来源于H₂O

According to Hartley, which of the following is NOT influenced by sexual conflict?

A．The evolution of the offspring's behaviour.

B．The look of the offspring's faces.

C．the number of eggs produced by one offspring at a time.

D．The offspring's body size.

According to Hartley, which of the following is NOT influenced by sexual conflict?

A．The evolution of the offspring's behaviour.

B．The look of the offspring's faces.

C．The number of eggs produced by one offspring at a time.

D．The offspring's body size.