（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
英译汉（Translate to Chinese）：Plant physiology
When it is advisable to remain on VHF channel 14 you should say（）.
Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.
植物细胞工程（plant cell engineering）
5.Most plants use the suns light to produce food for themselves.( )
Many scientists remain ________ about the value of this research program.
Senescence and apoptosis are two common cell fates, apoptosis leads to cell unable to maintain their normal functions.
Which of the following edits would most improve this sentence: “The mutant fungal cells showed profuse proliferation throughout the plant, whereas infected plants showed poor growth and often died.”?
During Yongle Da Di’s reign, many American plants were introduced into China through south-east Asian countries. Among them, all were included except _____.
After making observations for a week in the plant,the researcher made many very ____ suggestions in an oral report to themanager.
In ancient China, many important rituals were also related to caomu, such as flying kites and planting vegetables.
Normally, if a healthy cell acquires too many mutations to develop properly, the p53 gene will initiate cellular suicide. If this gene stops working, however, the cell keeps growing and can become malignant .
By “Returning to a Newborn State”, Laozi meant to remain childish.
In Chinese, “ 木 ” refers to woody plants like shrubs and trees.
The Polynesians, who colonized Hawaii sometime between AD. 500 and AD.1000, found uses for many indigenous plants.
What will be the possible threat to plants in the future？
.It's the best time to plant trees ____ spring.
To make food, plants need a lot except ______.
The most common is the “Yellow Belt”, by planting lots of trees and other green plants, we can create it across the country and provide a home for many wild life. _______________
Botany, the study of plants, occupies a peculiar position in the history of human knowledge. For not many thousands of years it was the one field of awareness about which humans had anything more than the vaguest of insights(了解). It is impossible to know today just what our Stone Age ancestors knew about plants. But from what we can observe of pre-industrial societies that still exist, a detailed learning of plants and their properties must be extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things, even for other plants. They have always been enormously important to the welfare of peoples, not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungles of the Amazon recognize literally hundreds of plants and know many properties of each. To them botany, as such, has no name and is probab-ly not even recognized as a special branch of "knowledge" at all.
A gardener wishes to plant 5 bushes in a straight row. Each bush has flowers of a different solid color (white, yellow, pink, red, and purple). How many ways can the bushes be arranged so that the middle bush is the one with red flowers？
All living things must fight to stay alive. They have to feed on something and at the same time avoid being eaten. Therefore they have to solve this big problem of staying alive in their own way. The danger of being eaten in the sea is great. Those plants and animals that do survive usually reproduce (繁殖 ) very fast and in great number. Certain sea animals have defensive device (装置 ) which help them to survive. The jelly fish have poisonous tentacles (触角 ) which are used for attack and defense. Another method of survival which sea plants and animals use is disguise (伪装. They usually have the same colour as their surroundings. In order to stay alive, animals need to have good senses. Fishes have sharp eyes. Almost all animals are sensitive to touch. Fishes judge movements in the water by means of their lines. Fishes and other sea animals can hear well and many of them can make different types of warning sounds.
If 100 primary oocytes（初级卵母细胞） and 500 primary sperm cells （初级精母细胞）are all mature, how many zygote （合子） will form after fertilization（）
