a.

1.A serial killer is on the loose!

有个连环杀手正逍遥法外！

2.I'm sorry you've had a wasted journey.

抱歉劳你白跑一。

3.Several small businesses consolidated to form a large powerful company.

小企业合并成了一实力雄厚的大型公司。

4.Viewed from the top of Mount Tai, the sunrise was indeed a spectacle.

从泰山顶上看去，日出真是个奇观。

5.A mule is a cross between a mare and a donkey.

骡子是雌马和驴的杂交种。

6.A tiglon is a cross between a lion and a tiger.

虎是子和老虎的杂交种。

7.A tigon is a cross between a tiger and a lion.

虎是老虎和子交配的产品。

8.A small room; a cubbyhole; a small secluded room; a small compartment.

有小房间，小隔间（橱），隐蔽的小房间，等等意思。具体翻译要看上下文而定。

9.A picture of a cat on a log is a rebus for catalog.

谜画中有一只猫(cat)站在一块木头(a log)上, 谜底是catalog(目录)。

10.I'm a renegade, a turncoat, a Scalawag.

我是个叛徒，变节，。

11.A dime is a tenth of a dollar.

一角银币是十分之一美元。

12.A chair consists of a seat with a back.

椅子是由椅座和椅背构成的。

13.A tenant occupies a flat, a building, a farm, etc but does not own it.

* tenent （房客或佃户）占用公寓、建筑物、农场等，但并非所有。

14.When a catalytically active enzyme forms a complex with a cofactor a holoenzyme is produced.

酶蛋白和辅助因子两结合成完整分子时，形成具有活力的全酶。

15.A mole is a blemish on a person's skin.

黑痣在人的皮肤上是一个疵点。

16.I saw a man leveling a gun at a crow.

我看见一个人正用枪瞄准一只乌鸦。

17.A coin has two sides,a head and a tail.

硬币有正反两面。

18.A larva metamorphose into a chrysalis and then into a butterfly.

幼虫变为蛹，然後再变成蝴蝶。

19.A catalyst is a substance which speeds up a chemical reaction.

催化剂是一种能加速化学反应的物质。

20.It is a legal fiction that a corporation is a person.

把团体法人当作一个人是一种法律上的假设。