Hawthorneeffect

Have you ever heard of “3G”? Third-generation(代) mobile phone, known as 3G are popular recently. Users can surf the Internet and enjoy videos on their phones. Firstly, for some forgetful people, they will get into trouble if they forget some important things. Now you don’t need to (__小题1:____) it any more. A 3G phone can receive video news programs and messages. Secondly, you are never afraid of losing your way home. 3G phones offer map services so that they can (__小题2:____) just by pressing(按) a few keys on your phone. The most important part of the 3G technology is video calling. You can (_小题3:____) your friends and family face to face on your phone.

It’s believed to bring people convenience in their daily lives.

目前杉木造林所用苗木主要通过播种育苗，造林苗木价格、生产成本低，但杉木种子园产量受到气候和大小年的影响，在大规模造林，特别是在优质壮苗生产上往往不能满足林业生产的需要。随着育苗技术的发展，现在有许多地方进行组织培养育苗，但育苗技术复杂，苗木价格较高。

简述杉木组培育苗的主要技术要点。

下列对蛋白质四级结构中亚基的叙述，正确的是

A．彼此间靠二硫键维持稳定
B．功能相同
C．具有独立的三级结构
D．结构相同
E．单独存在时有生物学活性

普通X线成像的成像介质是（）

A.探测器

B.平板探测器

C.X线胶片

D.影像板

E.接收线圈

痫证肝肾阴虚型宜选用：

A．二阴煎
B．生脉饮
C．大补元煎
D．左归丸
E．滋水清肝饮