单项选择题

From the conversation we can deduce that______.

A．they have a good beginning of trading
B．they are eager to know each other
C．they want to shake hands in Beijing
D．they hate the barriers between them
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单项选择题
Israeli scientists are working to share their desert aquaculture technology with countries like Tanzania, India and China because______.
A．all of them are third world countries
B．these countries are still struggling with lack of enough food
C．these countries are covered by large areas of dry land
D．people who live in these countries are among the poorest in the world
单项选择题
Which of the following statements about surrogate endpoints is NOT right
A．Surrogate endpoints are more reliable because they are based on objective measures.
B．Surrogate endpoints are not always reliable because the disease being treated may be too complicated to gauge with just one tool.
C．Surrogate endpoints may help streamline the process of drug approval.
D．Surrogate endpoints do not always reflect the safety of a drug because it may have many more effects than the one being measured.
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