30% of the young trees, attacked by diseases, ___ pine trees. A. is B. are C. was D. has been 相关知识点: 试题来源: 解析 B 本题考查主谓一致,百分数+名词,其后的谓语动词与名词保持一致,故谓语动词用复数。句意:遭受病害3 0%的小树是松树。
If you live in the north-east, you might have a white pine tree. These lovely native trees are usually easy to grow, but there is one serious disease that can attack them.This fungus attacks side branches, which die – creating ‘flags’ – and then spreads along the branch until it ...
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30 % of the young trees, attacked by diseases, ___pine trees. A.isB.areC.wasD.has been 试题答案 在线课程 B 解析 练习册系列答案 名校课堂系列答案 西城学科专项测试系列答案 小考必做系列答案 小考实战系列答案 小考复习精要系列答案 小考总动员...
30 % of the young trees, attacked by diseases, ___pine trees. A.is B.are C.was D.has been试题答案 在线课程 B 本题考查主谓一致,百分数+名词,其后的谓语动词与名词保持一致,故谓语动词用复数。句意:遭受病害3 0%的小树是松树。练习册系列答案 阳光训练课时...
相关知识点: 试题来源: 解析 C 结果一 题目 【题目】We use pine trees to fightdiseases.A:ofB:aboutC:againstD:to 答案 【解析】C相关推荐 1【题目】We use pine trees to fightdiseases.A:ofB:aboutC:againstD:to
( )4. We use pine trees to fightdiseases.A. ofB. aboutC. againstD. to 相关知识点: 试题来源: 解析 C 结果一 题目 ( )4. We use pine trees to fightdiseases.A. ofB. aboutC. againstD. to 答案 C相关推荐 1( )4. We use pine trees to fightdiseases.A. ofB. aboutC. againstD. to...
We use pine trees in Chinese medicine to fight againstA. supportB. pollutin(ωu(9v).9°D. diseases 答案 D【考点分析】fight against diseases 抵御疾病,A项“支持”、B项“污染”,C项“气体”因为是加入在药材中,因此选D项“疾病” 结果二 题目 5. We use pine trees in Chinese medicine to fig...
Diseases of forest trees widely planted as exotics in the tropics and Southern Hemisphere. Part 2: The genus Pinus The symptoms caused by nematode pathogens of pine trees are briefly described. The principal genera concerned are Meloidogyne, Meloidodera, Hoplolaimus and... IAS Gibson,IAS Gibson...
It has been determined that infected by insects spruce and larch trees produce large quantities of monoterpenoids and small quantities of monoterpenes, comparing to non-in- fected trees (Tab. 1, 2, 3). On the contrary, in case of fungi infected pine, contents of sesquiterpenoids has been ...