subterranea’s underground flowering happens thanks to its unique structure. Its stem grows...’s underground flowering happens thanks to its unique structure. Its stem grows in the shape ……

of plantsThere are two groups of plants. One is flowering plants (开花植物) and the other is non-flowering plants (不开花植物).Flowering plantsFlowering plants are the biggest group of plants. About 80 percent of all ……

are two groups of plants. One is flowering plants (开花植物) and the other is non-flowering plants (不开花植物).Flowering plantsFlowering plants are the biggest group of plants. About 80 percent of all plants ……

Heating up underground (P6)Heating up underground (P6)Choose the answer:Choose the answer:1. Which...” ground? A. Subway tunnels.  A. Subway tunnels.  B. Underground parking ……

and that it is the optimal (最佳的) time for flowering,” explained Takato Imaizumi, assistant professor... plants from flowering when conditions are poor for growing, such as during autumn or winter when ……

for flowering,” explained Takato Imaizumi, assistant professor at the University of Washington and leader of the study.This daylight-sensing system also keeps plants from flowering when conditions ……

的) time for flowering,” explained Takato Imaizumi, assistant professor at the University of Washington and leader of the study.This daylight-sensing system also keeps plants from flowering when conditions ……

;The last spring frosts are occurring earlier and flowering is occurring sooner, experts said. A main... earlier and flowering is occurring sooner, experts said. A main reason for this is climate change ……

.Scientists are studying how microgravity (微重力) affects (影响) the flowering time of plants. The plants... (影响) the flowering time of plants. The plants will experience a life cycle (生命周期) in space ……

by region due to differences in the timing of the flowering season. People go to flower fairs, drink flower... period varies by region due to differences in the timing of the flowering season. People go to flower ……

THIS picture was taken in a carriage of the Piccadilly Line of the London Underground System. It warns travelers about leaving luggage unattended in the Underground stations and the Underground ……

阅读文章，补全句子This year, the first underground trains are ___________ years old. The Underground started running in ___________. London was the ___________ city to get underground trains. Children under ……

地下再生水厂Asia’s largest underground water recycling facility began operating in southern Beijing’s Fengtai District on Oct 27. The Huaifang Underground Water Recycling Plant is capable of processing 600 ……

Going underground (P6)Going underground (P6)Choose the answer:Choose the answer:1. What do we know... a hard life.C. Many people there live underground.C. Many people there live underground.D ……

Clockwise from left: The kitchen, air vents and bedroom of an underground home in Coober Pedy, ... underground. And their way of life is now drawing attention (引起注意). It could help us deal with (应对 ……