More than 7 million tickets will go on sale for the 2008 Beijing Olympics, which is more than the number of tickets   1             (sell) in the 2004 Athens Games, the Beijing Organizing Committee for the Games of the 29th Olympiad (BOCOG) said on Friday.

Of the tickets, about 4.9 million,  2            70 per cent will be sold within China and the rest 30 per cent will be sold abroad.

“Since we have more   3               (seat) than Athens, we can sell     4                tickets,” said Rong Jun, an   5              (office) from the BOCOG Marketing Department.

It  6         (report) that Athens offered 5.3 million tickets  7       the 2004 Olympics.

“The  8             (open) ceremony will be held in the National Stadium, 9               is able to seat 91,000 people. Since  10              large number of seats will be taken by broadcasters and the media, there will be only about 60,000 for ordinary audience.”

关于性激素调节的叙述，错误的是（）

A.下丘脑产生促性腺激素释放激素

B.垂体产生促黄体生成素

C.雌孕激素都有正、负反馈作用

D.雌、孕激素急剧下降使子宫内膜失去支持，而产生月经

E.脑垂体通过分泌促卵泡素和黄体生成素对卵巢进行调节