[填空题]A -- timekeeper B -- land drill
C -- touching, the finishing line D -- lifeguard
E -- artificial waves F -- back stroke
G -- swimming lane H -- treading water
I -- diving pool J -- breast stroke
K -- one-meter springboard L -- butterfly stroke
M -- starting dive N -- changing room
O -- starting block P -- side stroke
Q -- swimming suit
( ) 出发起跳 ( )救生员

[填空题]A -- timekeeper B -- land drill
C -- touching, the finishing line D -- lifeguard
E -- artificial waves F -- back stroke
G -- swimming lane H -- treading water
I -- diving pool J -- breast stroke
K -- one-meter springboard L -- butterfly stroke
M -- starting dive N -- changing room
O -- starting block P -- side stroke
Q -- swimming suit
( ) 蝶泳 ( ) 计时员

[填空题]

A．land
B．hand
C．cable
D．band

[填空题]
( ) 蝶泳 ( ) 计时员

[填空题]

A、land
B、lake
C、taxi
D、boat
E、street
F、plane
G、bridge 

People can travel in it in the sky.（）

[填空题]Why is the author against the Bering Strait land bridge view

[填空题]{{B}}Land Use{{/B}} A problem related to the competition for land use is whether crops should be used to produce food or fuel. (1) ______ will be examined in this respect. (1) ______ Firstly, the problem should be viewed in its (2) ______ (2) ______ perspective. When oil prices rose sharply in the 1970s, countries had to look for alternatives to solve the resulting crisis. In developing countries, one of the possible answers to it is to produce alcohol from (3) ______ (3) ______ This has led to a lot of research in this area, particularly in the use of (4) ______ . The use of this material resulted (4) ______ from two economic reasons: a (5) ______ in its price and (5) ______ low (6) ______ costs. (6) ______ There are other starchy plants that can be used to produce alcohol, like the (7) ______ or the cassava plant