3. E. 分析：思路特點：段落中句子中的詞語/結構語意。a lack of funding， rather than a lack of volunteers， cost more than 50 million Yuan (6 million dollars)這些結構的含義表明“缺少基金”，因此E是答案。
A Urgent need for both donors and funds (核心詞)
C Desperate leukemia(白血病)patients(特征詞)
F Comparison between mainland and Hong kong and Taiwan (特征詞)
4. Paragraph 5. ____。
The Hong Kong Marrow Match Foundation said it has helped “a handful” of patients in Beijing， Shanghai and other cities. … But the cost of extracting bone marrow from one of the foundation’s 40，000 registered donors and flying it by courier has to be borne by the patients， and many of them have to be aided financially， Chin said.
4. A. 分析：思路特點：注意被選項中的核心詞。判斷A是答案：因為C中的“白血病”在段落中沒有出現，因此C不是答案； F中的特征詞“大陸，香港，臺灣”在段落中沒有出現，因此F不是答案。
A.about one percent of the total population
B.to be responsible for childhood leukemia
C.an urgent and tough task to be accomplished
D.less than one third of the minimum
E.an expensive cost to be paid
F. to afford the cost of bone marrow transportation
5. It seems that many of the recipients are not rich enough ___。
5. F 。 分析：enough 后應該跟不定式結構to do sth.。因此從語法角度上看B和F合適。從搭配語意(很多接受骨髓移植者不夠富有不能支付骨髓移植的費用。)上F合適。
A.about one percent of the total population
B.to be responsible for childhood leukemia
C an urgent and tough task to be accomplished
D less than one third of the minimum
E an expensive cost to be paid
6. At present the number of bone marrow donors in mainland China is ____。
6. D.分析：利用“the number of bone marrow donors 和mainland”作為答案線索，這樣發現答案相關句：(第3段)。。compared fewer than 30，000 donors among mainland China’s 1.3 billion people， the newspaper said. (第4段) China needs a pool of at least 100，000 donors but testing them would cost.。30，000/100，000 = 1/3， 因此判斷D是答案。
A.about one percent of the total population
B.to be responsible for childhood leukemia
C an urgent and tough task to be accomplished
E an expensive cost to be paid
7. Some solvents and building materials are considered ____。
7. B.分析：consider 后通常跟to 或as ，因此判斷B是答案。
A.about one percent of the total population
C an urgent and tough task to be accomplished
E an expensive cost to be paid
8. Obviously， recruiting voluntary bone marrow donors in mainland China is ___。
8. C.分析：根據搭配含義(很明顯，中國的大陸招募骨髓移植自愿者是一項緊迫而艱巨的任務)判斷C合適。