Google的营销计划(Ad Sense)属于()
A.搜索引擎优化
B.网页内容定位广告
C.搜索引擎登录
D.竞价排名
参考答案:B
Read and judge. 阅读短文,判断下列句子是(T)否(F)正确。
This is my brother, Tom. He is a teacher. Tom likes to eat meat and hot dogs. He likes to play ping-pong
and checkers. On Sunday, he always plays checkers with me. And every day he plays ping-pong in the morning. ( ) 1. Tom is my brother.
( ) 2. Tom is a student.
( ) 3. He likes meat and hot dogs.
( ) 4. He likes ping-pong and checkers.
( ) 5. Every day he plays checkers.
( ) 6. He plays ping-pong with me in the morning.
下图中的曲线表示1960-1990年间,大气中二氧化碳浓度的变化及气候变化。请据图分析回答:
(1)30年来,大气中的二氧化碳浓度呈___________趋势。这些二氧化碳来源于各种生物的____及____。
(2)图中温度几乎在持续____,导致这一现象发生的原因是______________,这种现象叫做____,它最终造成世界各地农作物______________和多种生物______________。