创建框架集页面时，以下（）属性用于指定各框架的列宽。A.colspan B.rows

Yao Ming, the centre of the Chinese National Men’s basketball team, joins the Houston Rocket in the 2002 NBA. The 2.2 m, 120kg basketball star becomes the first one to come from a foreign (外国的) team. Yao Ming was born in Shanghai in September, 1980. His mother is a leader of the Chinese National Women’s Team. His father plays basketball, too. Yao Ming is welcome in China. He becomes a very important basketball player in China Basketball Association. It’s short for CBA.

During the 2000-2001 seasons, he gets 27.1 scores for the Shanghai Oriental(东方) Sharks in every match. Yao Ming joins the Houston Rockets in November, 2002. He says this is a new start in his basketball life. He world do his best to learn from the NBA and improve(提高) himself. Sport analyst(分析家) Bill Walton says, “Yao Ming is very strong. He has the capability(能力) of changing the future(未来) of basketball.”

小题1:The Houston Rockets is the name of a _______ team. 

A．tabletennis

B．volleyball

C．basketball

D．golf小题2:Both Yao Ming’s father and mother are ___________.

A．footballplayers

B．theleaderoftheChineseNationalTeam

C．thecentersofChineseNationalTeam

D．basketballplayers小题3:Yao Ming ________ in CBA during the 2000-2001 seasons. 

A．doesbadly

B．isn’tgood

C．isin America

D．doeswell小题4:Yao Ming _________ the Houston Rockets in November, 2002.

A．doeshisbesttojoin

B．isa teacherin

C．becomesamemberof

D．leaves小题5:Sport analyst Bill Walton thinks Yao Ming can __________. 

A. learn from the NBA.

B. change the future of basketball 

C. improve himself

D. becomes the captain of the Houston Rockets.

下图表示基因型为AaBb的水稻花药通过无菌操作，接入试管后，在一定条件下形成试管苗的培育过程。请回答下列问题：

(1)在植物组织培养过程中，要进行一系列的消毒、无菌，还要进行无菌操作，其原因是____________。

(2)此试管苗的获得是利用了_______________。

(3)愈伤组织经过再分化可形成具有生根发芽能力的胚状体。胚状体包裹上人工种皮，加入人工胚乳便制成人工种子。人工种子的优势在于(答出三点即可)：_________________。

(4)培育成的试管苗的基因型可能有________种，其基因型分别为______________。

(5)试管苗为_______倍体，其特点是___________________。

(6)欲获得可育植株还要_________处理试管苗，所获得植株的基因型有____________，还要对这些植株进行__________，才能获得所需要的类型。

如图所示为一可保温电热水壶的电路示意图，烧水时，开关S处于______状态。若电热水壶烧水时消耗的功率为1000W，则电阻R₁=______Ω。如果保温状态下电热水壶消耗的功率是烧水时的，则R₂消耗的功率为______W。

对于居民与非居民的界定是判断交易是否应纳入国际收支统计的关键。（）

反映财务成果的报表为______。

A．资产负债表
B．利润表
C．单位产品成本表
D．现金流量表