A:attaching
B:attached
C:to attach
D:attache
— What's the weather like in summer?
— ______________.
用γ光子轰击氘核,使之产生中子和质子,已知氘核的质量为2.0135u,质子质量为1.0072u,中子的质量为1.0086u,1u=1.6605×10﹣27kg,普朗克常量H=6.63X10﹣34J•s,则γ光子的波长应为____m.
He got a chance to get further education in a university.
细胞核内行使遗传功能的结构是( )