下图为某一遗传病的家系图，其中Ⅱ2家族中无此致病基因，Ⅱ6父母正常，但有一个患病

下列各句中加点的成语使用恰当的一项是    (    )

A．你一旦进入了生活知识的宝库、就会感到又喜又惊，乐不思蜀。

B．在地摊上买药要特别小心，鱼龙混杂的东西多得很。

C．在激烈的竞争中，我们不应该妄自菲薄，而应该相信自己的实力，积极参与。

D．没想到，由于楼房的工程质量不过关，结果造成了墙面多处裂缝的现象，真是祸起萧墙。

在矩阵组织结构中，指令源有( )个。

A．1

B．2

C．3

D．多

The most accurate and most boring way to (66) Java is that it is a new computer programming language developed by Sun Microsystems that creates (67) independent programs that can be distributed and run remotely. To run Java programs, a computer must have a Java interpreter. Currently (68) Java programs are small "applets" that are (68) as part of web pages.

When you use a Java (69) browser to view a Web page that includes a Java applet, the browser loads the applet onto your computer through your modem or network. Then the Java interpreter runs the applet, which could include animation or sound, on your computer rather than transmitting the code bit by bit over Internet. A few thousand bytes of Java code can turn into a powerful program on your computer.

So an applet could include (70) with Java interpreter.

（69）处填（）。

A．stable

B．probable

C．available

D．capable

读图（阴影表示夜），回答下列问题。

此时，地球公转速度较（）（快/慢）。