我国第一枚运载火箭是（）年发射成功的。

某患者MCH为22pg，MCV为73fl，MCHC为250g/L。可诊断为（）

A.正常细胞性贫血

B.小细胞低色素性贫血

C.单纯小细胞性贫血

D.巨幼红细胞性贫血

E.缺铁性贫血

I’ve been waiting here____ morning; they haven’t showed up yet.

A．all the

B．the whole

C．whole

D．the all

非同源染色体

补写出下列名篇名句中的空缺部分。每空一分。（6分）

（1）————————————，渺沧海之一粟。————————————，羡长江之无穷。

（2）                           ，受上赏；                  ，受中赏；      

                  ，受下赏。

（3）居庙堂之高则忧其民，                           。

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet. There are two types of key technology: private key and public key. Private-key encryption methods are called (71) ciphers, information is encrypted with (72) both the sender and receiver hold privately. Public-key encryption methods are called (73) ciphers, (74) created for each user, encryption key and decryption key are (75)

A．synchronous

B．Asynchronous

C．symmetric

D．asymmetric