1 Long ago people ______little about those minerals.

2 Helen has finished her school and __________ .

3 She dances ____ than I do.

4 We had a test yesterday. I wish ___________ .

I know that smoking is bad for my health and I really want to ______ . But it's difficult, you know.

The bicycle is becoming more and more popular as _____ of transport.

7 The policeman stopped him when he was driving home and __________ him of speeding.

 charged

The dead man's widow said he had had a/an ______ that he would be killed in accident.

 knowledge

 experience

 presentiment

 warning

9 The secretary has been busy ____________ all afternoon.

 to type

 typing

 type

 typed

10 Mr Sims needs a more _____ vehicle for commuting from his suburban home to his office downtown.

 expressive

 reliable

 partial

 extreme

11 the store's manager plans to put the new merchandise on display ______ to promote the line of fall fashions.

 soon

 very

 that

 still

12 The governmental department used to provide financial aid, but now it offers _________ services only.

 legal

 legalize

 legally

 legalizes

Fill in each numbered blank with one suitable word or phrase.

Packet sugar from the supermarket is extracted from (13) _____sugar cane or sugar beet. These (14)____ are mixed with hot water, which dissolves their natural sugar. Sugar is also found in fruits, some of which, such as dates and grapes, (15) ____ very high amounts of sugar. To be a little more (16) ____, sugar should be called sucrose. Sucrose is____(17)______ two substances, glucose, which is used for instant energy, and fructose, which lasts longer as a source of energy. The sugar in fruit is mainly fructose. So, when we eat fruit, we also eat quite large amounts of _____(18)_____ sugar. Some scientists believe that too much - sugar is eaten in sweets, cakes, and biscuits. It is said to be generally bad _____(19)____ the health, although nothing (20) _____ so far. However, it is known that sugar ___(21)___ tooth decay. As one expert said that “If other foods damaged our body as much as sugar damaged our teeth, they ____(22)___be banned immediately.”

Algae is a primitive form of life, a single-celled or simple multiple-celled organism that is able to conduct the process of photosynthesis. It is generally found in water but can also be found elsewhere, growing on such surfaces as rocks or trees. The various types of algae are classified according to pigment.

Blue-green algae, or Cyanophyta, can grow at very high temperatures and under high-intensity light. This is a microscopic type of algae, and some species consist of only one cell. Blue-green algae is the oldest form of life with photosynthetic capabilities, and fossilized remains of this type of algae more than

billion years old have been found in parts of Africa.

Green algae, or Chlorophyta, is generally found in fresh water. It reproduces on the surfaces of enclosed bodies of water such as ponds or lakes and has the appearance of a fuzzy green coating on the water. In large quantities, this type of algae may reproduce enough to give a green color to an entire lake.

Brown algae, or Phaeophyta, grows in shallow, temperate water. This type of algae is the largest in size and is most recognizable as a type of seaweed; kelp is a type of brown algae that has grown to lengths of up to 200 feet. Its long stalks can be enmeshed on the ocean floor, or it can float freely on the ocean’s surface.

Red algae, or Rhodophyta, is a small, delicate organism found in the deep waters of the subtropics, where it often grows with coral. This type of algae has an essential role in the formation of coral reefs: it secretes lime from the seawater to foster the formation of limestone deposits.