The scientists 【小题1】 (决定探索) the deep ocean in order to find out what exists at the floor of the sea.Their first step 【小题2】 (实施这项计划) is 【小题3】 (派一台深水机器) designed specially for the research.【小题4】 (由科学家们远程控制的机器) at the surface of the sea is in a shape of an egg.They will watch the machine 【小题5】 (潜入大海深处).【小题6】 (进行这样的研究) is a long project that scientists have prepared for several months.

An advertisement 【小题1】 (use) words and pictures to persuade people to buy a product or service, or to believe in an idea. There are two main 【小题2】 (type) of advertisements—commercial advertisements and public service advertisements (PSAs). A commercial advertisement is one which someone has paid for to advertise a product or service. PSAs are often run 【小题3】 free, and are meant 【小题4】 (educate) people about health, safety, or any other problem 【小题5】 affects public welfare.

Astronauts’ 【小题1】 in space is quite different from that on the Earth.

Astronauts usually sleep in 【小题2】 and attach themselves to avoid floating around. Astronauts’ main task inside the space station is to conduct 【小题3】. And the most challenging work outside the space station includes 【小题4】, monitoring scientific experiments or repairing the space station, so 【小题5】 is necessary. Astronauts eat dried or 【小题6】 food, drink through a 【小题7】 of plastic and ensure a balanced nutrients by taking pills. Astronauts have to do at least two hours of 【小题8】 in space every day because 【小题9】 has great bad effects on their body. Astronauts like 【小题10】 of the Earth in their leisure time.