下列词语中加点字的字音完全正确的一项是：（  ）

A．蹩（bíe）进拗（ào）开打烊(yàng)山川相缪（liǎo）

B．城垣(huán)迤(yǐ)逦攫(jué)取 除臣洗（xiǎn）马

C．愀（qiǎo）然玄（xián）色瘐(yǔ)毙横槊（shuò）赋诗

D．丛冢（zhǒng）帐簿(bù)省(xǐng)亲智者乐（yào）也

The country has already sent up three unmanned spacecraft, the most recent ______________  at the

end of last March.   [ ]

A.  has been launched  

B. having been launched  

C. being launched  

D.  to be launched