一、单选题 1、In the national library,one can find numerous ______ with various books.A.shelf B.shelfs C.shelves 2、James takes holiday after a week of labor,for happiness ______ always necessary to get him relaxed.A.is B.are C.have been 3、T

x��U]s7�+z� f2�?t�׶�GF��Y5�+ic̓�N21�6i $%�(%q�a��I��޵��_葴�1�L_��ҕt�瞫�n��ߴ/'��q{q��.9�ٗ�
#�\D4$!�H*[���҈�x�(�3)bE.�ir�y*��U��SS3S*`a��w����`�)ra��u�4��3!�i�Кf�P�dl�� iEH�&$ h��#���4lҖ"��xD2�4 x�Hҋ���J��
�g��XD>C�o�+��^���19�s"�`�Ύ(�����W9$�P��&k�\� �h��@UD�+�|C7|*Fe5`Ry:����5�0d���c��Q:�Y�= ���΋0�4Î� d9���tx��*O��b�zs�030)iĒU$p~�d��s��i�V8�a�E��,��">� �Xea�i�"�ڲ��-5D2=��5�gML�-�0s8���z��.d�9 3�ȏC] �Z"FJ"!C�MY4�bf���""�$s@�(A�q50G_��|YU���}F�
�^3h��"��D�:y*9�^B)Q���1%v�0���=�nm�#�����J�s��ʉn�r� ���Q��`_i��8B�k8�d���6����%5LmTøR�+b8� �+N2��+g�;\
��G���M���a�� ��ش,F 5Z�c���Ao�"4�$�#�DI�L\�-���!9��]نc�hC�� �r����Y�7A�y
�~SHpf[EiM�LGc](�&�Uͫ��"T&5�y��r2���j՛E���(+�A$�?��gn_\b�t=ى ��e���0�EZ���+(��*"�E�2F/��r�54������^���`� ;\A�K�s������{y�d����U��O�e7I;㍇���`�I��w�G|���az��t{�{צ�;��-]_�?�㕵A����i��o z��^������Ao�P�t�du�]4eB��^��u���u{����u{Ã��^��J��zHu�տ�da [�%15�ƙ2=����KV{��[��m@J�G��Z�L��}��