中部烟叶采收需（）。A、适时早收 B、工艺成熟时采收 C、尚熟采收 D、任何时期采收

读全球热量平衡图，回答下列问题。

小题1:下列叙述，符合事实的是

A．地面辐射使大气增温，同时地面也升温

B．太阳辐射使地面增温，但大气不吸收太阳辐射

C．就整个地球平均状况而言，地球(地面和大气)收入的热量和支出的热量是相等的

D．在大气对太阳辐射的削弱作用和大气对地面的保温作用共同影响下加大了气温日较差小题2:低层大气增温主要是     的结果

A．受太阳光直接照射

B．近地面臭氧吸收紫外线

C．太阳辐射被大气中的水汽和二氧化碳吸收

D．地面的长波辐射被大气中的水汽和二氧化碳吸收

The idea for a science experiment can come from an unusual place. After watching a YouTube video of a dancing bird named Snowball, a scientist in California decided to study the ability of animals to keep the beat.

Bird lovers have long claimed that their pets have rhythm, and there are many videos of dancing birds online. Until now, scientists have suspected that humans are the only animals that can accurately keep rhythm with music.

Thanks to Snowball, that scientific opinion is changing. Snowball is a cockatoo, a kind of parrot, and his favorite song is "Everybody" by the Backstreet Boys. When he hears the song, he moves his feet and rocks his body with the tempo, or pace of the music, as though he is the only bird member of the boy band.

Aniruddh Patel is a neuroscientist, or a scientist who studies how the brain and the nervous system contribute to learning, seeing and other mental abilities. He works at the Neurosciences Institute in San Diego. After seeing Snowball's dance online, Patel visited the cockatoo at the bird rescue facility he's called home for two years. The scientist played "Everybody" for Snowball and also played versions of the song that were sped up or slowed down. Sometimes, Snowball danced too fast or too slowly. Often, when there was a change in tempo, Snowball adjusted his dancing to match the rhythm. In other experiments, scientists have observed the same abilities in preschool children.

Patel isn't the only scientist who has studied Snowball's moves. Adena Schachner, who studies psychology at Harvard University, also wanted to know more about the dancing bird. Schachner's team played different musical pieces for Snowball and a parrot named Alex, as well as eight human volunteers. The scientists observed that the birds and the humans kept time to the music with about the same accuracy.

Schachner and her team watched thousands of YouTube videos of different animals moving to music. Not all the animals could dance, however. From watching the videos, the scientists observed that only animals that imitate sounds, including 14 parrot species and Asian elephants, accurately moved in time to music.

63.   The underlined words “that scientific opinion” in the third paragraph refers to the theory that ______.

A.birds like Snowball have the ability to keep the beat

B.humans are the only animals that can accurately keep rhythm with music

C.the brain and the nervous system contribute to some mental abilities

D.bird pets can have their special rhythm under human’s instruction

64.   From the fourth paragraph we may know that ______.

A.Patel is the only scientist who has studied Snowball’s moves.

B.Snowball is able to adjust his dancing to match the rhythm.

C.Snowball cannot dance to the versions of the song Everybody.

D.it is the brain and the nervous system that control the mental abilities.

65.   The idea of studying animals’ ability to keep the beat comes from ______.

A.bird lovers’ discovery

B.humans musical sense

C.the same abilities in children

D.videos of dancing birds

66.   According to the scientists, Snowball’s ability to dance to music is probably related to the fact that ______.

A.it is the only bird member of the Backstreet Boys band

B.it has the ability to imitate sounds

C.it is a kind of dancing parrot

D.it has the same abilities as preschool children

设∑是z=x²+y²在1≤z≤4部分的上侧，则I=

xdydz+ydzdx+zdxdy=______．

（）是在公共的运营网络中开辟出一片相对独立的资源，专门为某个企业用户使用，而企业用户可以具有一定的权限监控和管理自己的这部分资源，就如同自己组建了一个专用网络一样。

A.虚拟专用网

B.流量工程

C.逐跳路由

D.显式路由

2002年GINA哮喘治疗需要根据不同级别进行，当患者每日应用吸入激素还需要应用LABA时，属于（）

A.二级，轻度持续

B.二级，中度持续

C.三级，中度持续

D.四级，重度持续