A. failed B. finished C. tried D. changed

中國古代藝術精彩紛呈，享譽世界，其中集彩塑、壁畫和建筑藝術于一體的是（ ）

A.麥積山石窟 B.敦煌莫高窟 C.大足石刻 D.云岡石窟

People tend to make mistake when ____.

A. they perform. several challenging tasks at a time.

B. new messages are processed one after another

C. their relationships with others are affected

D. the tasks require little thought

Millions of jobless Americans, who might be suffering in anxiety and lacking a sense of security, are showing up at emergency rooms of state- owned hospitals, contributing to a longer waiting time and a higher risk of cursory treatment by overworked doctors and nurses.

The author uses the Philharmonic pub to prove that _________.

A. Liverpool is a well-known city for its restaurants

B. Liverpool is an impressive place full of attraction

C. a pub is a wonderful place for visitors to relax themselves

D. a pub is a perfect choice for visitors to complete their journey

Nowadays people sometimes separate their waste to make it easier for it .

A. reusing B. reused C. reuses D. to be reused

What is the text mainly about

A. The research into war history.

B. The finding of a forgotten hero.

C. The pilots of the two world wars.

D.The importance of military studies.

單細胞銅綠微囊藻大量繁殖可形成水華．受到廣泛關注。下面是有關銅綠微囊藻的研究．請回答問題：

(1)利用配制的X培養液培養銅綠微囊藻8 d.每天定時測定其細胞數量，發現銅綠徽囊藻數量呈指數增長.短時間內產生大量個體，這是因為銅綠微囊藻具有____等特性。

(2)某同學用x培養液培養銅綠微囊藻時.加人粉綠狐尾藻(一種高等水生植物).結果銅綠微囊藻生長受到明顯抑制.重要的原因是這兩種生物在利用____等資源時存在顯著的競爭關系。

(3)也有人提出假設：粉綠狐尾藻能產生化學物質抑制銅綠微囊藻的生長。請利用下列實驗材料用具.完成實驗設計.探究該假設是否成立。

材料用具：銅綠微囊藻.粉綠狐尾藻，用于配制x培養液的各種無機鹽，500 mL錐形瓶，蒸餾水，顯微鏡，血球計數板，蓋玻片.玻璃缸，微孔濾膜(可以除菌)等。

實驗步驟：

①材料準備：在裝有7000 mL蒸餾水的玻璃缸中種植一定數量且生長良好的粉綠狐尾藻.在適宜條件下培養8 d。準備接種用的銅綠微囊藻。

⑦培養液配制：____。

③實驗分組：取錐形瓶6只.分為兩組。____。

④接種與培養：____。

⑤觀察與統計：每天定時用血球計散板對6只錐形瓶內銅綠傲羹蕞細胞進行計數.計算平均值.比較兩組同的差異。

(4)若(3)中假設成立.則實驗結果是____。

A good agent can help you ____.

A. know more people

B. find cheap accommodation

C. get the right accommodation quickly

D. get free information about most accommodations

下列表述，符合原文意思的一項是___

A、用紙托裱畫作的裝裱方式使得我國古代珍貴名畫能夠幸存至今。

B、《裝裱志》是我國書畫裝裱進入發展的黃金時期的重要標志之一。

C、地理氣候的差異使我國不同地區就有不同的裝裱流派和風格。

D、“京裱”和“蘇裱”兩大流派代表我國書畫裝裱工藝的最高水平。