When you see a tree getting cut down, try to find out why. Sometimes trees are destroyed (被破坏) or diseased, so they need to be cut down. Otherwise, it's still possible to save the tree. Planting enough new trees can also help. You should plant trees that are native(本地的) to...
Of the 50 tree species native to British Columbia many of the largest, widest or tallest specimens of several species are found within Vancouver city limits. For example, there are record specimens of red alder and big leaf maple in Stanley Park. Others are nearby, including the giant black ...
Pines trees are native to most of the Northern Hemisphere. Several species have adapted to the harsh conditions of high elevations and latitudes, including Methuselah himself, growing among the peaks of the White Mountains of Northern California. Pines can be small, such as the Siberian Dwarf Pine...
A篇41---44 BCCB41.B 细节理解题.排除法.选项A,从文中第一段There are 115 distinct(独特的)species of pine trees with 35 native to North America.有115种独特品种的松树,其中35种原产于北美洲.故A不正确;选项C,第一段The average pine is 45 to 60 feet tall,but some are nearly twice as hi...
Lychee fruit cease to ripen once harvested, so it is important to allow the fruit to ripen on the tree.The Litchi chinensis is a tropical fruit tree native to the low elevations of the Kwangtung and Fukien provinces in the Southern China....
Only a small number of tree species hava the genetic ability to grow really big.The biggest are native to North America. but big trees grow all over the globe, from tha tropics to the forests of the high latitudes(纬度). To achieve grant size, a tree needs three things: the right plac...
Inclusion of the division of the province into forest regions; Forest managers' use of the biogeoclimatic system (BEC) to identify ecologically equivalent sites; Number of native tree species; Percentage of the forests ...
Pines trees are native to most of the Northern Hemisphere. Several species have adapted to the harsh conditions of high elevations and latitudes, including Methuselah himself, growing among the peaks of the White Mountains of Northern California. Pines can be small, such as the Siberian Dwarf Pine...
44.D考查名词.A.flower 花;B.pet 宠物;C.crop 庄稼;D.plant植物.根据Last year I bought 150 young trees from a native (44)D sale.25 of these trees were kept for myself(去年,我从当地的一家工厂买了150棵小树.)根据句意可知选D. 45.B考查名词.A.parents父母;B.neighbors 邻居;C.workers工人...
Checklist of native and naturalized trees of the United States. Agric. Handb. 541. Washington, DC: U.S. Department of Agriculture, Forest Service; ... EL Little - Check list of native and naturalized trees of the United States, including Alaska. 被引量: 168发表: 1953年 Maclura pomifera...