【单选题】He is widely ______ as one of the best leaders of the country.
【单选题】The reason _____ the president of Czech is widely discussed recently is _______ he was seen “to steal” a pen at a press conference in Chile.
【单选题】Although he is considered a great writer, _____.
A.
however his works are not widely read
B.
but his works are not widely read
C.
his works are not widely read
D.
still his works are not widely read
【简答题】曲线y=xe -x 的拐点是______.