Last term our maths teacher set so difficult an examination problem _____ none of us worked out.

　 A. that 　 B. as   C. so that 　 D. which

Yesterday our head teacher made such an　　　　speech that we all felt　　　　.

A. exciting; exciting      B. excited; excited

C. exciting; excited       D. excited; exciting

根据所给首字母或中文提示写出适当的词。(共10小题；每小题1分，满分10分)
76. In my o____________, it was foolish of him to commit suicide.
77. Did the medicine have any e________ on his disease?
78. It is our ______________ (传统的) custom to celebrate the Spring Festival.
79. After the ceremony , the guests can ________(出席)a wedding reception , which is usually a huge party and can last through　the night .
80. The students ____________ (抱怨) that they didn’t have enough sleep.
81. He fell off the bike , _____.(幸运地)he was not hurt seriously.
82. Tom g __________ from a college in 1980 and got a job in a local government.
83. As a student, it is good for us to c________ learning with fun.
84. Before she stepped onto the stage to make a speech, she gave me a _____ （自信的） smile.
85. When our English teacher wants somebody to answer his question, he will raise his hand and ask, “ Any v ________ ?”

Ever since news of widespread food recalls caused by a carcinogenic dye broke, there has been confusion（混淆） over possible links to the country of the same name, but Sudan officials say there is no connection whatever．
Sudan 1 is a red industrial dye（颜料） that has been found in some chilli powder, but was banned in food products across the European Union (EU) in July 2003．
Since the ban was put in place, EU officials have been trying to remove some food products from the shelves．So far 580 products have been recalled．
Last week Sudan’s Embassy in the United Kingdom asked the Food Standards Agency (FSA) for clarification(澄清) of the origin of the dye’s name．
Omaima Mahmoud Al Sharief, a press official at Sudan’s Embassy in China, explained the purpose of the inquiry was to clear up any misunderstanding over links between the country and the poisonous dye．
　　"We want to keep an eye on every detail and avoid any misunderstanding there," she said．"Our embassy to Britain asked them how the dye got that name and whether the dye had something to do with our country．But they told us there was no relationship．"
The FSA, an independent food security watchdog in Britain, received a letter from the Sudanese embassy last week．
　"They asked us why the dye is named Sudan, however, we also do not know how it got the name," she said．"People found the dye in 1883 and gave it the name．Nobody knows the reason, and we cannot give any explanation before we find out．"
Sudan dyes, which include Sudan 1 to 4, are red dyesused for colouring oils, waxes, petrol, and shoe and floor polishes．They are classified as carcinogens by the International Agency for Research on Cancer．
【小题1】What does the underlined word “carcinogenic” mean in paragraph one?

Last term our maths teacher set so difficult an examination problem _____ none of us worked out.

　 A. that 　 B. as    C. so that 　 D. which